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7,800 | Traditionally, Cephalochordata and Craniata were grouped into the proposed clade "Euchordata", which would have been the sister group to Tunicata/Urochordata. More recently, Cephalochordata has been thought of as a sister group to the "Olfactores", which includes the craniates and tunicates. The matter is not yet settl... | https://en.wikipedia.org/wiki?curid=5131 |
7,801 | A specific relationship between Vertebrates and Tunicates is also strongly supported by two CSIs found in the proteins predicted exosome complex RRP44 and serine palmitoyltransferase, that are exclusively shared by species from these two subphyla but not Cephalochordates, indicating Vertebrates are more closely related... | https://en.wikipedia.org/wiki?curid=5131 |
7,802 | Phylogenetic tree of the chordate phylum. Lines of the cladogram show probable evolutionary relationships between both extinct taxa, which are denoted with a dagger (†), and extant taxa. Relatives of vertebrates are invertebrates. The positions (relationships) of the lancelets, tunicates, and craniates/vertebrates are ... | https://en.wikipedia.org/wiki?curid=5131 |
7,803 | The closest relatives of the Chordates are the Hemichordates and Echinodermata, which together form the Ambulacraria. | https://en.wikipedia.org/wiki?curid=5131 |
7,804 | Hemichordates ("half chordates") have some features similar to those of chordates: branchial openings that open into the pharynx and look rather like gill slits; stomochords, similar in composition to notochords, but running in a circle round the "collar", which is ahead of the mouth; and a dorsal nerve cord—but also a... | https://en.wikipedia.org/wiki?curid=5131 |
7,805 | There are two living groups of hemichordates. The solitary enteropneusts, commonly known as "acorn worms", have long proboscises and worm-like bodies with up to 200 branchial slits, are up to long, and burrow though seafloor sediments. Pterobranchs are colonial animals, often less than long individually, whose dwelling... | https://en.wikipedia.org/wiki?curid=5131 |
7,806 | Echinoderms differ from chordates and their other relatives in three conspicuous ways: they possess bilateral symmetry only as larvae – in adulthood they have radial symmetry, meaning that their body pattern is shaped like a wheel; they have tube feet; and their bodies are supported by skeletons made of calcite, a mate... | https://en.wikipedia.org/wiki?curid=5131 |
7,807 | Although the name Chordata is attributed to William Bateson (1885), it was already in prevalent use by 1880. Ernst Haeckel described a taxon comprising tunicates, cephalochordates, and vertebrates in 1866. Though he used the German vernacular form, it is allowed under the ICZN code because of its subsequent latinizatio... | https://en.wikipedia.org/wiki?curid=5131 |
7,808 | An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. | https://en.wikipedia.org/wiki?curid=7593 |
7,809 | The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom. | https://en.wikipedia.org/wiki?curid=7593 |
7,810 | Modern electronic calculators vary from cheap, give-away, credit-card-sized models to sturdy desktop models with built-in printers. They became popular in the mid-1970s as the incorporation of integrated circuits reduced their size and cost. By the end of that decade, prices had dropped to the point where a basic calcu... | https://en.wikipedia.org/wiki?curid=7593 |
7,811 | Computer operating systems as far back as early Unix have included interactive calculator programs such as dc and hoc, and interactive BASIC could be used to do calculations on most 1970s and 1980s home computers. Calculator functions are included in most personal digital assistant (PDA) type devices. | https://en.wikipedia.org/wiki?curid=7593 |
7,812 | In addition to general purpose calculators, there are those designed for specific markets. For example, there are scientific calculators which include trigonometric and statistical calculations. Some calculators even have the ability to do computer algebra. Graphing calculators can be used to graph functions defined on... | https://en.wikipedia.org/wiki?curid=7593 |
7,813 | With the very wide availability of smartphones, tablet computers and personal computers, dedicated hardware calculators, while still widely used, are less common than they once were. In 1986, calculators still represented an estimated 41% of the world's general-purpose hardware capacity to compute information. By 2007,... | https://en.wikipedia.org/wiki?curid=7593 |
7,814 | Electronic calculators contain a keyboard with buttons for digits and arithmetical operations; some even contain "00" and "000" buttons to make larger or smaller numbers easier to enter. Most basic calculators assign only one digit or operation on each button; however, in more specific calculators, a button can perform... | https://en.wikipedia.org/wiki?curid=7593 |
7,815 | Calculators usually have liquid-crystal displays (LCD) as output in place of historical light-emitting diode (LED) displays and vacuum fluorescent displays (VFD); details are provided in the section "Technical improvements". | https://en.wikipedia.org/wiki?curid=7593 |
7,816 | Large-sized figures are often used to improve readability; while using decimal separator (usually a point rather than a comma) instead of or in addition to vulgar fractions. Various symbols for function commands may also be shown on the display. Fractions such as are displayed as decimal approximations, for example rou... | https://en.wikipedia.org/wiki?curid=7593 |
7,817 | Calculators also have the ability to store numbers into computer memory. Basic calculators usually store only one number at a time; more specific types are able to store many numbers represented in variables. The variables can also be used for constructing formulas. Some models have the ability to extend memory capacit... | https://en.wikipedia.org/wiki?curid=7593 |
7,818 | Power sources of calculators are batteries, solar cells or mains electricity (for old models), turning on with a switch or button. Some models even have no turn-off button but they provide some way to put off (for example, leaving no operation for a moment, covering solar cell exposure, or closing their lid). Crank-pow... | https://en.wikipedia.org/wiki?curid=7593 |
7,819 | The following keys are common to most pocket calculators. While the arrangement of the digits is standard, the positions of other keys vary from model to model; the illustration is an example. | https://en.wikipedia.org/wiki?curid=7593 |
7,820 | Clock rate of a processor chip refers to the frequency at which the central processing unit (CPU) is running. It is used as an indicator of the processor's speed, and is measured in "clock cycles per second" or hertz (Hz). For basic calculators, the speed can vary from a few hundred hertz to the kilohertz range. | https://en.wikipedia.org/wiki?curid=7593 |
7,821 | Most pocket calculators do all their calculations in binary-coded decimal (BCD) rather than binary. BCD is common in electronic systems where a numeric value is to be displayed, especially in systems consisting solely of digital logic, and not containing a microprocessor. By employing BCD, the manipulation of numerical... | https://en.wikipedia.org/wiki?curid=7593 |
7,822 | The same argument applies when hardware of this type uses an embedded microcontroller or other small processor. Often, smaller code results when representing numbers internally in BCD format, since a conversion from or to binary representation can be expensive on such limited processors. For these applications, some sm... | https://en.wikipedia.org/wiki?curid=7593 |
7,823 | Where calculators have added functions (such as square root, or trigonometric functions), software algorithms are required to produce high precision results. Sometimes significant design effort is needed to fit all the desired functions in the limited memory space available in the calculator chip, with acceptable calcu... | https://en.wikipedia.org/wiki?curid=7593 |
7,824 | The fundamental difference between a calculator and computer is that a computer can be programmed in a way that allows the program to take different branches according to intermediate results, while calculators are pre-designed with specific functions (such as addition, multiplication, and logarithms) built in. The dis... | https://en.wikipedia.org/wiki?curid=7593 |
7,825 | For instance, instead of a hardware multiplier, a calculator might implement floating point mathematics with code in read-only memory (ROM), and compute trigonometric functions with the CORDIC algorithm because CORDIC does not require much multiplication. Bit serial logic designs are more common in calculators whereas ... | https://en.wikipedia.org/wiki?curid=7593 |
7,826 | The first known tools used to aid arithmetic calculations were: bones (used to tally items), pebbles, and counting boards, and the abacus, known to have been used by Sumerians and Egyptians before 2000 BC. Except for the Antikythera mechanism (an "out of the time" astronomical device), development of computing tools ar... | https://en.wikipedia.org/wiki?curid=7593 |
7,827 | In 1642, the Renaissance saw the invention of the mechanical calculator (by Wilhelm Schickard and several decades later Blaise Pascal), a device that was at times somewhat over-promoted as being able to perform all four arithmetic operations with minimal human intervention. Pascal's calculator could add and subtract tw... | https://en.wikipedia.org/wiki?curid=7593 |
7,828 | The 18th century saw the arrival of some notable improvements, first by Poleni with the first fully functional calculating clock and four-operation machine, but these machines were almost always "one of a kind". Luigi Torchi invented the first direct multiplication machine in 1834: this was also the second key-driven m... | https://en.wikipedia.org/wiki?curid=7593 |
7,829 | It wasn't until 1902 that the familiar push-button user interface was developed, with the introduction of the Dalton Adding Machine, developed by James L. Dalton in the United States. | https://en.wikipedia.org/wiki?curid=7593 |
7,830 | In 1921, Edith Clarke invented the "Clarke calculator", a simple graph-based calculator for solving line equations involving hyperbolic functions. This allowed electrical engineers to simplify calculations for inductance and capacitance in power transmission lines. | https://en.wikipedia.org/wiki?curid=7593 |
7,831 | The Curta calculator was developed in 1948 and, although costly, became popular for its portability. This purely mechanical hand-held device could do addition, subtraction, multiplication and division. By the early 1970s electronic pocket calculators ended manufacture of mechanical calculators, although the Curta remai... | https://en.wikipedia.org/wiki?curid=7593 |
7,832 | The first mainframe computers, using firstly vacuum tubes and later transistors in the logic circuits, appeared in the 1940s and 1950s. This technology was to provide a stepping stone to the development of electronic calculators. | https://en.wikipedia.org/wiki?curid=7593 |
7,833 | The Casio Computer Company, in Japan, released the Model "14-A" calculator in 1957, which was the world's first all-electric (relatively) compact calculator. It did not use electronic logic but was based on relay technology, and was built into a desk. | https://en.wikipedia.org/wiki?curid=7593 |
7,834 | In October 1961, the world's first "all-electronic desktop" calculator, the British Bell Punch/Sumlock Comptometer ANITA (A New Inspiration To Arithmetic/Accounting) was announced. This machine used vacuum tubes, cold-cathode tubes and Dekatrons in its circuits, with 12 cold-cathode "Nixie" tubes for its display. Two m... | https://en.wikipedia.org/wiki?curid=7593 |
7,835 | The tube technology of the ANITA was superseded in June 1963 by the U.S. manufactured Friden EC-130, which had an all-transistor design, a stack of four 13-digit numbers displayed on a cathode ray tube (CRT), and introduced Reverse Polish Notation (RPN) to the calculator market for a price of $2200, which was about thr... | https://en.wikipedia.org/wiki?curid=7593 |
7,836 | There followed a series of electronic calculator models from these and other manufacturers, including Canon, Mathatronics, Olivetti, SCM (Smith-Corona-Marchant), Sony, Toshiba, and Wang. The early calculators used hundreds of germanium transistors, which were cheaper than silicon transistors, on multiple circuit boards... | https://en.wikipedia.org/wiki?curid=7593 |
7,837 | Bulgaria's ELKA 6521, introduced in 1965, was developed by the Central Institute for Calculation Technologies and built at the Elektronika factory in Sofia. The name derives from "ELektronen KAlkulator", and it weighed around . It is the first calculator in the world which includes the square root function. Later that ... | https://en.wikipedia.org/wiki?curid=7593 |
7,838 | The first desktop "programmable calculators" were produced in the mid-1960s. They included the Mathatronics Mathatron (1964) and the Olivetti Programma 101 (late 1965) which were solid-state, desktop, printing, floating point, algebraic entry, programmable, stored-program electronic calculators. Both could be programme... | https://en.wikipedia.org/wiki?curid=7593 |
7,839 | Another early programmable desktop calculator (and maybe the first Japanese one) was the Casio (AL-1000) produced in 1967. It featured a nixie tubes display and had transistor electronics and ferrite core memory. | https://en.wikipedia.org/wiki?curid=7593 |
7,840 | The "Monroe Epic" programmable calculator came on the market in 1967. A large, printing, desk-top unit, with an attached floor-standing logic tower, it could be programmed to perform many computer-like functions. However, the only "branch" instruction was an implied unconditional branch (GOTO) at the end of the operati... | https://en.wikipedia.org/wiki?curid=7593 |
7,841 | The first Soviet programmable desktop calculator ISKRA 123, powered by the power grid, was released at the start of the 1970s. | https://en.wikipedia.org/wiki?curid=7593 |
7,842 | The electronic calculators of the mid-1960s were large and heavy desktop machines due to their use of hundreds of transistors on several circuit boards with a large power consumption that required an AC power supply. There were great efforts to put the logic required for a calculator into fewer and fewer integrated cir... | https://en.wikipedia.org/wiki?curid=7593 |
7,843 | By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable ... | https://en.wikipedia.org/wiki?curid=7593 |
7,844 | The first commercially produced portable calculators appeared in Japan in 1970, and were soon marketed around the world. These included the Sanyo ICC-0081 "Mini Calculator", the Canon Pocketronic, and the Sharp QT-8B "micro Compet". The Canon Pocketronic was a development from the "Cal-Tech" project. It had no traditio... | https://en.wikipedia.org/wiki?curid=7593 |
7,845 | Sharp put in great efforts in size and power reduction and introduced in January 1971 the Sharp EL-8, also marketed as the Facit 1111, which was close to being a pocket calculator. It weighed 1.59 pounds (721 grams), had a vacuum fluorescent display, rechargeable NiCad batteries, and initially sold for US$395. | https://en.wikipedia.org/wiki?curid=7593 |
7,846 | However, integrated circuit development efforts culminated in early 1971 with the introduction of the first "calculator on a chip", the MK6010 by Mostek, followed by Texas Instruments later in the year. Although these early hand-held calculators were very costly, these advances in electronics, together with development... | https://en.wikipedia.org/wiki?curid=7593 |
7,847 | In 1971, Pico Electronics and General Instrument also introduced their first collaboration in ICs, a full single chip calculator IC for the Monroe Royal Digital III calculator. Pico was a spinout by five GI design engineers whose vision was to create single chip calculator ICs. Pico and GI went on to have significant s... | https://en.wikipedia.org/wiki?curid=7593 |
7,848 | The first truly pocket-sized electronic calculator was the Busicom LE-120A "HANDY", which was marketed early in 1971. Made in Japan, this was also the first calculator to use an LED display, the first hand-held calculator to use a single integrated circuit (then proclaimed as a "calculator on a chip"), the Mostek MK601... | https://en.wikipedia.org/wiki?curid=7593 |
7,849 | The first European-made pocket-sized calculator, DB 800 was made in May 1971 by Digitron in Buje, Croatia (former Yugoslavia) with four functions and an eight-digit display and special characters for a negative number and a warning that the calculation has too many digits to display. | https://en.wikipedia.org/wiki?curid=7593 |
7,850 | The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed "The Bowmar Brain"), measuring , came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for , while in August 1972 the four-function Sinclair Executive became the first slimline pocket calculator measurin... | https://en.wikipedia.org/wiki?curid=7593 |
7,851 | The first Soviet Union made pocket-sized calculator, the "Elektronika B3-04" was developed by the end of 1973 and sold at the start of 1974. | https://en.wikipedia.org/wiki?curid=7593 |
7,852 | One of the first low-cost calculators was the Sinclair Cambridge, launched in August 1973. It retailed for £29.95 ($), or £5 ($) less in kit form. The Sinclair calculators were successful because they were far cheaper than the competition; however, their design led to slow and inaccurate computations of transcendental ... | https://en.wikipedia.org/wiki?curid=7593 |
7,853 | Meanwhile, Hewlett-Packard (HP) had been developing a pocket calculator. Launched in early 1972, it was unlike the other basic four-function pocket calculators then available in that it was the first pocket calculator with "scientific" functions that could replace a slide rule. The $395 HP-35, along with nearly all lat... | https://en.wikipedia.org/wiki?curid=7593 |
7,854 | In 1973, Texas Instruments (TI) introduced the SR-10, ("SR" signifying slide rule) an "algebraic entry" pocket calculator using scientific notation for $150. Shortly after the SR-11 featured an added key for entering pi (π). It was followed the next year by the SR-50 which added log and trig functions to compete with t... | https://en.wikipedia.org/wiki?curid=7593 |
7,855 | In 1978, a new company, Calculated Industries arose which focused on specialized markets. Their first calculator, the Loan Arranger (1978) was a pocket calculator marketed to the Real Estate industry with preprogrammed functions to simplify the process of calculating payments and future values. In 1985, CI launched a c... | https://en.wikipedia.org/wiki?curid=7593 |
7,856 | The first programmable pocket calculator was the HP-65, in 1974; it had a capacity of 100 instructions, and could store and retrieve programs with a built-in magnetic card reader. Two years later the HP-25C introduced "continuous memory", i.e., programs and data were retained in CMOS memory during power-off. In 1979, H... | https://en.wikipedia.org/wiki?curid=7593 |
7,857 | The first Soviet pocket battery-powered programmable calculator, Elektronika "B3-21", was developed by the end of 1976 and released at the start of 1977. The successor of B3-21, the Elektronika B3-34 wasn't backward compatible with B3-21, even if it kept the reverse Polish notation (RPN). Thus B3-34 defined a new comma... | https://en.wikipedia.org/wiki?curid=7593 |
7,858 | This series of calculators was also noted for a large number of highly counter-intuitive mysterious undocumented features, somewhat similar to "synthetic programming" of the American HP-41, which were exploited by applying normal arithmetic operations to error messages, jumping to nonexistent addresses and other method... | https://en.wikipedia.org/wiki?curid=7593 |
7,859 | A similar hacker culture in the USA revolved around the HP-41, which was also noted for a large number of undocumented features and was much more powerful than B3-34. | https://en.wikipedia.org/wiki?curid=7593 |
7,860 | Through the 1970s the hand-held electronic calculator underwent rapid development. The red LED and blue/green vacuum fluorescent displays consumed a lot of power and the calculators either had a short battery life (often measured in hours, so rechargeable nickel-cadmium batteries were common) or were large so that they... | https://en.wikipedia.org/wiki?curid=7593 |
7,861 | A more successful series of calculators using a reflective DSM-LCD was launched in 1972 by Sharp Inc with the Sharp "EL-805", which was a slim pocket calculator. This, and another few similar models, used Sharp's "Calculator On Substrate" (COS) technology. An extension of one glass plate needed for the liquid crystal d... | https://en.wikipedia.org/wiki?curid=7593 |
7,862 | In the mid-1970s the first calculators appeared with field-effect, "twisted nematic" (TN) LCDs with dark numerals against a grey background, though the early ones often had a yellow filter over them to cut out damaging ultraviolet rays. The advantage of LCDs is that they are passive light modulators reflecting light, w... | https://en.wikipedia.org/wiki?curid=7593 |
7,863 | There were also improvements to the electronics inside the calculators. All of the logic functions of a calculator had been squeezed into the first "calculator on a chip" integrated circuits (ICs) in 1971, but this was leading edge technology of the time and yields were low and costs were high. Many calculators continu... | https://en.wikipedia.org/wiki?curid=7593 |
7,864 | The power consumption of the integrated circuits was also reduced, especially with the introduction of CMOS technology. Appearing in the Sharp "EL-801" in 1972, the transistors in the logic cells of CMOS ICs only used any appreciable power when they changed state. The LED and VFD displays often required added driver tr... | https://en.wikipedia.org/wiki?curid=7593 |
7,865 | With this low power consumption came the possibility of using solar cells as the power source, realised around 1978 by calculators such as the Royal "Solar 1", Sharp "EL-8026", and Teal "Photon". | https://en.wikipedia.org/wiki?curid=7593 |
7,866 | At the start of the 1970s, hand-held electronic calculators were very costly, at two or three weeks' wages, and so were a luxury item. The high price was due to their construction requiring many mechanical and electronic components which were costly to produce, and production runs that were too small to exploit economi... | https://en.wikipedia.org/wiki?curid=7593 |
7,867 | By 1976, the cost of the cheapest four-function pocket calculator had dropped to a few dollars, about 1/20 of the cost five years before. The results of this were that the pocket calculator was affordable, and that it was now difficult for the manufacturers to make a profit from calculators, leading to many firms dropp... | https://en.wikipedia.org/wiki?curid=7593 |
7,868 | The first calculator capable of symbolic computing was the HP-28C, released in 1987. It could, for example, solve quadratic equations symbolically. The first graphing calculator was the Casio fx-7000G released in 1985. | https://en.wikipedia.org/wiki?curid=7593 |
7,869 | The two leading manufacturers, HP and TI, released increasingly feature-laden calculators during the 1980s and 1990s. At the turn of the millennium, the line between a graphing calculator and a handheld computer was not always clear, as some very advanced calculators such as the TI-89, the Voyage 200 and HP-49G could d... | https://en.wikipedia.org/wiki?curid=7593 |
7,870 | The HP 12c financial calculator is still produced. It was introduced in 1981 and is still being made with few changes. The HP 12c featured the reverse Polish notation mode of data entry. In 2003 several new models were released, including an improved version of the HP 12c, the "HP 12c platinum edition" which added more... | https://en.wikipedia.org/wiki?curid=7593 |
7,871 | Calculated Industries competed with the HP 12c in the mortgage and real estate markets by differentiating the key labeling; changing the "I", "PV", "FV" to easier labeling terms such as "Int", "Term", "Pmt", and not using the reverse Polish notation. However, CI's more successful calculators involved a line of construc... | https://en.wikipedia.org/wiki?curid=7593 |
7,872 | Personal computers often come with a calculator utility program that emulates the appearance and functions of a calculator, using the graphical user interface to portray a calculator. One such example is Windows Calculator. Most personal data assistants (PDAs) and smartphones also have such a feature. | https://en.wikipedia.org/wiki?curid=7593 |
7,873 | In most countries, students use calculators for schoolwork. There was some initial resistance to the idea out of fear that basic or elementary arithmetic skills would suffer. There remains disagreement about the importance of the ability to perform calculations "in the head", with some curricula restricting calculator ... | https://en.wikipedia.org/wiki?curid=7593 |
7,874 | The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space Force is part of the Department of the Air Force, one of the three civilian-led m... | https://en.wikipedia.org/wiki?curid=54465810 |
7,875 | The Space Force is the smallest U.S. armed service, consisting of 8,400 military personnel. The Space Force operates 77 spacecraft in total across various programs such as GPS, Space Fence, military satellite communications constellations, X-37B spaceplanes, U.S. missile warning system, U.S. space surveillance network,... | https://en.wikipedia.org/wiki?curid=54465810 |
7,876 | The U.S. Space Force traces its roots to the beginning of the Cold War, with the first Army Air Forces space programs starting in 1945. In 1954, the Western Development Division, under General Bernard Schriever, was established as the first dedicated space organization within the U.S. Armed Forces and continues to exis... | https://en.wikipedia.org/wiki?curid=54465810 |
7,877 | The first discussions of creating a military space service occurred in 1958, and the idea was also being considered in 1982 by President Ronald Reagan. The 2001 Space Commission argued for the creation of a Space Corps between 2007 and 2011, and a bipartisan proposal in the U.S. Congress would have created a U.S. Space... | https://en.wikipedia.org/wiki?curid=54465810 |
7,878 | The United States Space Force Act codified the Space Force as organized, trained, and equipped to "provide freedom of operation for the United States in, from, and to space" and "provide prompt and sustained space operations," with its stated duties enumerated as to "protect the interests of the United States in space,... | https://en.wikipedia.org/wiki?curid=54465810 |
7,879 | On 10 August 2020, the Space Force released its capstone doctrine, "Spacepower: Doctrine for Space Forces", further expanding on its enumerated missions and duties. In "Spacepower", the Space Force defines its three cornerstone responsibilities, which it articulates why spacepower is vital to U.S. prosperity and securi... | https://en.wikipedia.org/wiki?curid=54465810 |
7,880 | Following the conclusion of the Second World War in 1945, early military space development was begun within the United States Army Air Forces by General Henry H. Arnold, who identified space as a crucial military arena decades before the first spaceflight. Gaining its independence from the United States Army in 1947, t... | https://en.wikipedia.org/wiki?curid=54465810 |
7,881 | In 1954, the Air Force created its first space organization, the Western Development Division, under the leadership of General Bernard Schriever. The Western Development Division and its successor organization, the Air Force Ballistic Missile Division, were instrumental in developing the first United States military la... | https://en.wikipedia.org/wiki?curid=54465810 |
7,882 | The establishment of NASA in 1958, however, eliminated the Army Ballistic Missile Agency, resulting in the Air Force Ballistic Missile Division serving as the primary military space organization. In 1961, the Air Force was designated as the Department of Defense's executive agent for space and Air Research and Developm... | https://en.wikipedia.org/wiki?curid=54465810 |
7,883 | In 1967, the Space Systems Division and Ballistic Missiles Division were merged to form the Space and Missile Systems Organization, which began to develop the next generation of satellite communications, space-based missile warning, space launch vehicles and infrastructure, and the predecessor to the Global Positioning... | https://en.wikipedia.org/wiki?curid=54465810 |
7,884 | During the 1980s, Air Force Space Command absorbed the space missions of Strategic Air Command and the launch mission from Air Force Systems Command. Space forces provided space support during the Falklands War, the United States invasion of Grenada, the 1986 United States bombing of Libya, Operation Earnest Will, and ... | https://en.wikipedia.org/wiki?curid=54465810 |
7,885 | Following the end of the Gulf War, the Air Force came under intense congressional scrutiny by seeking to artificially merge its air and space operations into a seamless aerospace continuum, without regard for the differences between space and air. During the 1990s, several proposals were put forth for an independent sp... | https://en.wikipedia.org/wiki?curid=54465810 |
7,886 | Growing impatient with the Air Force, who they felt was more interested in jet fighters than space, representatives Jim Cooper and Mike Rogers unveiled a bipartisan proposal in the House of Representatives to establish the United States Space Corps as a separate military service within the Department of the Air Force, ... | https://en.wikipedia.org/wiki?curid=54465810 |
7,887 | The Space Corps proposal gained new life when, at a June 2018 meeting of the National Space Council, President Donald Trump directed the Department of Defense to begin the necessary processes to establish the U.S. Space Force as a branch of the Armed Forces. On 19 February 2019, Space Policy Directive 4 was signed, ini... | https://en.wikipedia.org/wiki?curid=54465810 |
7,888 | On 20 December, its first organizational change occurred when Secretary of the Air Force Barbara Barrett designated Air Force Space Command's Fourteenth Air Force as Space Operations Command. All of Air Force Space Command's 16,000 active duty and civilian personnel were assigned to the new service. Major organizationa... | https://en.wikipedia.org/wiki?curid=54465810 |
7,889 | On 21 October 2020, Space Operations Command was established as its first field command, replacing headquarters Air Force Space Command. The first Space Operations Command (redesignated Fourteenth Air Force) was redesignated back to Fourteenth Air Force, inactivated on 21 October 2020 and return to the United States Ai... | https://en.wikipedia.org/wiki?curid=54465810 |
7,890 | On 3 April 2020, Chief Master Sergeant Roger A. Towberman, formerly command chief of Air Force Space Command, transferred to the Space Force as the Senior Enlisted Advisor of the Space Force, becoming its second member and first enlisted member. On 18 April 2020, 86 graduates of the United States Air Force Academy beca... | https://en.wikipedia.org/wiki?curid=54465810 |
7,891 | During the first year major symbols were also unveiled, with the Seal of the United States Space Force approved on 15 January 2020 and was revealed on 24 January 2020, the flag of the United States Space Force debuted at signing ceremony for the 2020 Armed Forces Day proclamation on 15 May 2020, the Space Force Delta s... | https://en.wikipedia.org/wiki?curid=54465810 |
7,892 | In September 2020, the Space Force and NASA signed a memorandum of understanding formally acknowledging the joint role of both agencies. This new memorandum replaced a similar document signed in 2006 between NASA and Air Force Space Command. The Space Force's first combat operations as a new service included providing ... | https://en.wikipedia.org/wiki?curid=54465810 |
7,893 | On 20 September 2022, the Space Force unveiled its official anthem, the march "Semper Supra" ("Always Above"), in a performance by the United States Air Force Band during the 2022 Air & Space Forces Association Air, Space and Cyber Conference at National Harbor, Maryland. | https://en.wikipedia.org/wiki?curid=54465810 |
7,894 | The United States Space Force is organized and managed under the civilian-led Department of the Air Force, which also manages the United States Air Force. The Department of the Air Force is under the leadership of the secretary of the Air Force (SecAF) and under secretary of the Air Force, both civilian political appoi... | https://en.wikipedia.org/wiki?curid=54465810 |
7,895 | The Space Force's field organizations consist of three different echelons of command: field commands, deltas or garrisons, and squadrons. Field commands align with specific mission focuses and are led by a lieutenant general or major general. Deltas and garrisons are organized around a specific function, such as operat... | https://en.wikipedia.org/wiki?curid=54465810 |
7,896 | The Space Staff, also known as the "Office of the Chief of Space Operations or Headquarters," which serves as the service's highest staff and headquarters element, is located at the Pentagon. | https://en.wikipedia.org/wiki?curid=54465810 |
7,897 | The Space Staff is overseen by the chief of space operations (CSO), who holds the four-star rank of General and is responsible for organizing, training, and equipping the Space Force and serves as the principal advisor to the Secretary of the Air Force on the Space Force. In addition to a service role, the CSO serves o... | https://en.wikipedia.org/wiki?curid=54465810 |
7,898 | The vice chief of space operations (VCSO), also holding the rank of General, serves as the Deputy to the Chief of Space Operations and is responsible for overseeing, integrating space policy and guidance, and coordinating space-related activities for the U.S. Space Force and Department of the Air Force. | https://en.wikipedia.org/wiki?curid=54465810 |
7,899 | The Chief Master Sergeant of the Space Force (CMSSF) is the most senior enlisted member of the Space Force unless an enlisted guardian is serving as the senior enlisted advisor to the chairman. The CMSSF provides direction for and represents the interests of the Space Force's enlisted corps, while also acting as a pers... | https://en.wikipedia.org/wiki?curid=54465810 |
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