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my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation . it 's 109 times the circumference of the earth times 40 hours . that 's what it would take to do the circumference of the earth . so it 's 4,360 hours to circumnavigate the sun , going at the speed...
how big is the circumference of jupiter ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
if i were to draw it on this scale , where the sun is even smaller , the earth would be about that big . now , what is n't obvious , because we 've all done our science projects in third and fourth grade -- or we always see these diagrams of the solar system that look something like this -- is that these planets are wa...
what is the order of the planets ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
maybe we ca n't comprehend it , but i 'll say this is the fastest thing that we could maybe comprehend . it goes about -- and there are different types of bullets depending on the type of gun and all of that -- about 280 meters per second , which is about 1,000 kilometers per hour . and this is also roughly the speed o...
and here is my question what types of eclipse are there ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to give a sense of how far this is , light , which is something that we think is almost infinitely fast and that is something that looks instantaneous , that takes eight minutes to travel from the sun to the earth . if the sun were to disappear , it would take eight minutes for us to know that it disappeared o...
would the sun 's gravitational effects travel as quickly were it to somehow disappear ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and this distance right here is called an astronomical unit -- and we 'll be using that term in the next few videos just because it 's an easier way to think about distance -- sometimes abbreviated au , astronomical unit . and just to give a sense of how far this is , light , which is something that we think is almost ...
does gravity propagate as quickly as light ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
sal makes the earth as a little dot and the sunas a big circle but i thought 109 earths could fit in the sun , and how many jupiter 's could fit in the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and this is also roughly the speed of a jet . so just to give a sense of scale here , the earth 's circumference -- so if you were to go around the planet -- is about 40,000 kilometers . so if you were to travel at the speed of a bullet or the speed of a jetliner , at 1,000 kilometers an hour , it would take you 40 hou...
why is pluto not a planet ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the sun ? so if you were to get on a jet plane and try to go around the sun , or if you ...
how long does the sun move and when does the sun goes down how hot is it and how long is it ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
what will happen if we interchange the volume of sun and the earth without affecting their masses ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
anyway , i 'm going to leave you there . hopefully that just starts to blow your mind when you think about the scale of the sun , the earth , and how far the earth is away from the sun . and then we 're going to see even those distances , even those scales , are super small when you start thinking about the rest of the...
i 'm truly fascinated by khan acadamy 's explainations on things in which case i have a few questions about scale of gravity with the earth , sun and moon.based on magnetic fields and weight how much pull ( on scale ) is the sun and moon actually using on the earth to spin on its axis ( without all of us falling off bu...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and on the earth that would be about this far . it would be a speck that would look something like that . that is 100 miles .
and if you were in the `` pull zone '' would you be spaghettified ( stretched ) or disentigrated by fire since space is both hot and cold ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to give a sense of how far this is , light , which is something that we think is almost infinitely fast and that is something that looks instantaneous , that takes eight minutes to travel from the sun to the earth . if the sun were to disappear , it would take eight minutes for us to know that it disappeared o...
what happens in the those 8 minutes with gamma/uv rays , radiation , radio waves , our spinning axis , ect ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the sun ? so if you were to get on a jet plane and try to go around the sun , or if you ...
would we not feel a quake and see a huge supernova explode before our eyes then the lights go out ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and also to get us a bit of scale , let 's think about a speed that at least we can kind of comprehend . and that would be , maybe , the speed of a bullet . maybe we ca n't comprehend it , but i 'll say this is the fastest thing that we could maybe comprehend .
why not measure by the speed of sound insited of a bullet ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth . it would n't even be a pixel . but it would be 150 million kilometers from the earth .
as there is n't anything faster than light , if the sun were to explode would we be dissipated right away or it would only reach us 8 minutes later ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
can a planet or sun be disc formed ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
let me write this down . half a year . the sun is huge .
also what is a light year and how long is it ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
is the sun a medium sized starand what is it made out of ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth .
how was the earth made ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the sun ? so if you were to get on a jet plane and try to go around the sun , or if you ...
how long does it take for the earth to orbit the the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
how was it determined if which latitude is tropic of cancer and which is tropic of capricorn ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
and if all the meridians are same then why is greenwich meridian preferred as the prime meridian ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
how can scientists measure the distance of the earth and the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth .
mr creator why is earth so round ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
now , with that out of the way let 's think about the sun . because the sun starts to approach something far huger . so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , includ...
if the earth were , say , a mile closer to the sun , how much hotter would our climate be ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the sun ? so if you were to get on a jet plane and try to go around the sun , or if you ...
how long will it take for the suns dimeter to become that of a red super giant ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and this is also roughly the speed of a jet . so just to give a sense of scale here , the earth 's circumference -- so if you were to go around the planet -- is about 40,000 kilometers . so if you were to travel at the speed of a bullet or the speed of a jetliner , at 1,000 kilometers an hour , it would take you 40 hou...
if gravity and inertia balance out to create the orbit , what causes the initial inertia that the planet follows forever ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and then we 're going to see even those distances , even those scales , are super small when you start thinking about the rest of the solar system . and especially when we start going beyond the solar system .
how did voyager 1 and 2 escape the solar system without using fuel ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot .
how can the universe expand ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
it would be a speck that would look something like that . that is 100 miles . and also to get us a bit of scale , let 's think about a speed that at least we can kind of comprehend .
is it true that you can fit 100 earths on saturn 's ring ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if you were to travel at the speed of a bullet or the speed of a jetliner , at 1,000 kilometers an hour , it would take you 40 hours to circumnavigate the earth . and i think none of this information is too surprising . you might have taken a 12- or 15-hour flight that gets you -- not all the way around the earth --...
what kinds of animals do you think jupiter might have inside ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
or , if we divided by 365 , roughly 17 years . if you were to shoot a bullet straight at the sun it would take 17 years to get there , if it could maintain its velocity somehow . so this would take a bullet or a jet plane 17 years to get to the sun . or another way to visualize it -- this sun right over here , on my sc...
how big can a star get ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth . so just to give you a sense...
why did people name so many planets after roman gods insted of greek ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
doesent the distance between the earth and the sun vary ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
perfectly , how many miles across earth through venus and mercury to the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
how hot is a kelvin ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth .
why is the earth called the earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
is the sun 's core made up of the same stuff as the earth 's core ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot .
are there really 'aliens ' in the universe ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so you could imagine , if you had a football field -- let me draw a football field . these are the end zones -- one end zone , another end zone . and if you were to stick something -- maybe the size of a medicine ball , a little bit bigger than a basketball , at one end zone -- this little speck would be about 60 yards...
what is the goldilocks zone ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so you could imagine , if you had a football field -- let me draw a football field . these are the end zones -- one end zone , another end zone . and if you were to stick something -- maybe the size of a medicine ball , a little bit bigger than a basketball , at one end zone -- this little speck would be about 60 yards...
are the planets in the goldilocks zone of their star systems are suitable for life ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
does gravity [ sun 's own gravity and of the other planets ] and other forces have any effect on the speed of light or any other properties of light ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so it 's this little speck . you would n't even notice it on the scale of a football field , something this size . anyway , i 'm going to leave you there .
if the earth has a north pole and a south pole , would n't that make it have a magnetic field ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
how many earths can fit inside the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
anyway , i 'm going to leave you there . hopefully that just starts to blow your mind when you think about the scale of the sun , the earth , and how far the earth is away from the sun . and then we 're going to see even those distances , even those scales , are super small when you start thinking about the rest of the...
in `` scale of the earth and sun '' he says it 's 109x earth 's circumference ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and this is also roughly the speed of a jet . so just to give a sense of scale here , the earth 's circumference -- so if you were to go around the planet -- is about 40,000 kilometers . so if you were to travel at the speed of a bullet or the speed of a jetliner , at 1,000 kilometers an hour , it would take you 40 hou...
is earth really the only planet humans and animals can live on ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and on the earth that would be about this far . it would be a speck that would look something like that . that is 100 miles .
what would happen in terms of gravity ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and on the earth that would be about this far . it would be a speck that would look something like that . that is 100 miles .
would we feel the absence of its gravitational effects right away ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation . it 's 109 times the circumference of the earth times 40 hours . that 's what it would take to do the circumference of the earth . so it 's 4,360 hours to circumnavigate the sun , going at the speed...
how did we find the circumference of the earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
although , even for me , the earth itself is a pretty mind-blowingly large object . now , with that out of the way let 's think about the sun . because the sun starts to approach something far huger . so this obviously here is the sun .
ok i saw someone asking does the sun have an orbit and kahacademy answered saying , it orbits the center of the milky-way , but we all know there has to be something in between our solar system and the center of the universe much , much , much bigger than our universe and everything inside of it , so wouldnt we be orbi...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to put that in perspective , if we want it in days , there 's 24 hours per day . so this would be 6,250 days . or , if we divided by 365 , roughly 17 years . if you were to shoot a bullet straight at the sun it would take 17 years to get there , if it could maintain its velocity somehow . so this would take a ...
in the next few years would the sun have a solor flare and fry mercery , venes , and earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and then we 're going to see even those distances , even those scales , are super small when you start thinking about the rest of the solar system . and especially when we start going beyond the solar system .
considering the depiction of the solar system 5 - if the sun has so much mass , resulting in a huge amount of gravitational pull , what keeps our planet , as well as the rest of the planets in our solar system from crashing into it and each other ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
or , if we divided by 365 , roughly 17 years . if you were to shoot a bullet straight at the sun it would take 17 years to get there , if it could maintain its velocity somehow . so this would take a bullet or a jet plane 17 years to get to the sun .
my physics teacher told me that it was because of the centripetal force that each planet maintains , but how could a velocity perpendicular to that of the sun 's gravity keep them on the orbital path they are currently on ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
so , my question : what sort of fuel is used to propel the vehicle/s ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
are the impulses of heat on the sun caused by many hydrogen helium conversions at one time ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so you could imagine , if you had a football field -- let me draw a football field . these are the end zones -- one end zone , another end zone . and if you were to stick something -- maybe the size of a medicine ball , a little bit bigger than a basketball , at one end zone -- this little speck would be about 60 yards...
if so how much heat does one atom of hydrogen generate when converted ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth .
do any of u no how fast the earth is spining ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so it would be 100 times -- i could do 109 , but just for approximate -- it 's roughly 100 times the circumference of the earth . so 109 times 40 is equal to 4,000 hours . and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation .
the earth is just 40,000 kilometres ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation . it 's 109 times the circumference of the earth times 40 hours . that 's what it would take to do the circumference of the earth .
how did they calculate that the circumference of the earth is about 40,000km ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
how can scientist guess the age of the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so just to give you a sense , the sun is 109 times the circumference of the earth . so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the ...
how fast does the jet go to take 40 hrs round earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
where is the nearest wormhole ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
these are the end zones -- one end zone , another end zone . and if you were to stick something -- maybe the size of a medicine ball , a little bit bigger than a basketball , at one end zone -- this little speck would be about 60 yards away , roughly 60 meters away . so it 's this little speck .
what is a medicine ball ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot .
how was the universe formed ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
how hot is the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
what is the sun made of ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
why does sun appear reddish in the image in the video , though it clearly emits all electromagnetic radiations ( thus complete visible spectrum ) ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
how hot is the sun from earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot .
geez , our universe is enormous how many intelligent civilizations might exist ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
why are heavenly bodies round ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so this obviously here is the sun . and i think most people appreciate that the sun is much larger than the earth , and that it 's pretty far away from the earth . but i do n't think most people , including myself , fully appreciate how large the sun is or how far it is away from the earth .
i want to ask you a philosophical question : who is the creature of the earth and other galaxies ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
or , if we divided by 365 , roughly 17 years . if you were to shoot a bullet straight at the sun it would take 17 years to get there , if it could maintain its velocity somehow . so this would take a bullet or a jet plane 17 years to get to the sun .
sal said that the ' if the velocity could remain the same somehow , '' is n't this apply to newton 's 1st law ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and also to get us a bit of scale , let 's think about a speed that at least we can kind of comprehend . and that would be , maybe , the speed of a bullet . maybe we ca n't comprehend it , but i 'll say this is the fastest thing that we could maybe comprehend .
would n't the bullet continue on at a constant speed , since there is not resistance to stop it ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if this is the sun right here , at this scale you would n't even be able to see the earth . it would n't even be a pixel . but it would be 150 million kilometers from the earth .
why does n't mars have life on it ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so just to give you a sense , the sun is 109 times the circumference of the earth . so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the ...
so traveling around the earth at the speed of a bullet would take around 40 hours , which is more than a day which has 24 hours ... how fast does the earth spin again ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and also to get us a bit of scale , let 's think about a speed that at least we can kind of comprehend . and that would be , maybe , the speed of a bullet . maybe we ca n't comprehend it , but i 'll say this is the fastest thing that we could maybe comprehend .
how does a jet make enough thrust to match the speed of a speeding bullet ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
or another way to think about it -- if the sun was about this size , then the earth at this scale would be about 200 feet away from it . so you could imagine , if you had a football field -- let me draw a football field . these are the end zones -- one end zone , another end zone .
why does sal use a football field ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to give a sense of how far this is , light , which is something that we think is almost infinitely fast and that is something that looks instantaneous , that takes eight minutes to travel from the sun to the earth . if the sun were to disappear , it would take eight minutes for us to know that it disappeared o...
could we detect that the sun was gone 8 minutes before the light went out if we could detect the change of the earth 's tragectory ) ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
or another way , just to put it in the sense of this jet airplane -- let 's get the calculator back out . so we 're talking about 150 million kilometers . so if we 're going at 1,000 kilometers an hour , it would take us 150,000 hours at the speed of a bullet or at the speed of a jet plane to get to the sun . and just ...
is one au always 150,000,000 km ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
from earth the sun looks yellow-orange ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
what is the sun 's real color ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
you would n't even notice it on the scale of a football field , something this size . anyway , i 'm going to leave you there . hopefully that just starts to blow your mind when you think about the scale of the sun , the earth , and how far the earth is away from the sun .
what is the total distance going around the earth ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
can anyone explain what those flares from the sun ( the 4-inch pic ) were caused by ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if we do that same thought exercise there -- if we said , ok , if i 'm traveling at the speed of a bullet or the speed of a jetliner , it would take me 40 hours to go around the earth . well , how long would it take to go around the sun ? so if you were to get on a jet plane and try to go around the sun , or if you ...
traveling at the speed of a jet , how long would it take to get to the moon ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
how many earths fit inside sun , and how many murcury s fit in sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
even though these are depicted to scale , they 're way further away from the sun than this makes it look . so the earth is 150 million kilometers from the sun . so if this is the sun right here , at this scale you would n't even be able to see the earth .
i was just wondering , is it true that you can fit about ( roughly ) 1 million earths inside the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if this is the sun right here , at this scale you would n't even be able to see the earth . it would n't even be a pixel . but it would be 150 million kilometers from the earth .
how is that even possible ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
right now , nov 2014 , roughly how many earths could fit in the sun ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
it would be a speck that would look something like that . that is 100 miles . and also to get us a bit of scale , let 's think about a speed that at least we can kind of comprehend .
how many miles that earth have ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
is the biggest megaflare a supernova or a gamma ray burst ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
what is the biggest star ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation . it 's 109 times the circumference of the earth times 40 hours . that 's what it would take to do the circumference of the earth .
how many times does the earth fit into it ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
so if you were to get on a jet plane and try to go around the sun , or if you were to somehow ride a bullet and try to go around the sun -- do a complete circumnavigation of the sun -- it 's going to take you 109 times as long as it would have taken you to do the earth . so it would be 100 times -- i could do 109 , but...
hi um is it true that the earth can fit inside jupiter 100 times ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine .
how was the univerese formed ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to get a sense of what 4,000 is -- actually , since i have the calculator out , let 's do the exact calculation . it 's 109 times the circumference of the earth times 40 hours . that 's what it would take to do the circumference of the earth .
when sal says that the sun 's circumference is 109 times the size of earth , does he include coronal mass ejections , solar flares , etc ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
it goes about -- and there are different types of bullets depending on the type of gun and all of that -- about 280 meters per second , which is about 1,000 kilometers per hour . and this is also roughly the speed of a jet . so just to give a sense of scale here , the earth 's circumference -- so if you were to go arou...
how much faster is a rocket than a jet ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
if the sun were to disappear , it would take eight minutes for us to know that it disappeared on earth . or another way , just to put it in the sense of this jet airplane -- let 's get the calculator back out . so we 're talking about 150 million kilometers .
why does n't it get put out by the vacuums of space ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
if you were to shoot a bullet straight at the sun it would take 17 years to get there , if it could maintain its velocity somehow . so this would take a bullet or a jet plane 17 years to get to the sun . or another way to visualize it -- this sun right over here , on my screen it has about a five- or six-inch diameter ...
do all the planets lie in the same plane ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
half a year . the sun is huge . now , that by itself may or may not be surprising -- and actually let me give you a sense of scale here , because i have this other diagram of a sun .
if the sun is a star , and all stars explode to a black hole is n't there a chance for the sun to explode ?
my goal in this video and the next video is to start giving a sense of the scale of the earth and the solar system . and as we see , as we start getting into to the galaxy and the universe , it just becomes almost impossible to imagine . but we 'll at least give our best shot . so i think most of us watching this video...
and just to give a sense of how far this is , light , which is something that we think is almost infinitely fast and that is something that looks instantaneous , that takes eight minutes to travel from the sun to the earth . if the sun were to disappear , it would take eight minutes for us to know that it disappeared o...
if so , how can we save earth from the sun and still find a star that could provide us with light and energy ... ... ... ... ... ... ... can we do anything to save our planet ?