Update space missions database: 25,159 missions

README.md

@@ -3,12 +3,7 @@ license: cc0-1.0
 pretty_name: "Space Missions Database"
 language:
   - en
-description: >-
-  Comprehensive database of space missions sourced from Wikidata.
-  25,137 missions covering crewed and uncrewed spaceflight from the dawn
-  of the Space Age to the present.
-size_categories:
-  - 10K<n<100K
+description: "Comprehensive database of space missions -- both crewed and uncrewed -- sourced from Wikidata's structured knowledge base. Covers the full history of spaceflight from the dawn of the Space Age to the "
 task_categories:
   - tabular-classification
 tags:
@@ -19,47 +14,66 @@ tags:
   - open-data
   - tabular-data
   - parquet
+size_categories:
+  - 10K<n<100K
 configs:
   - config_name: default
-    default: true
     data_files:
       - split: train
-        path: data/space-missions.parquet
+        path: data/space_missions.parquet
+    default: true
 ---
 
 # Space Missions Database
 
-*Part of the [Orbital Mechanics Datasets](https://huggingface.co/collections/juliensimon/orbital-mechanics-datasets-69c24caca4ab3934c9856994) collection on Hugging Face.*
 
-Comprehensive database of **25,137** space missions — both crewed and uncrewed — sourced from [Wikidata](https://www.wikidata.org/).
+<div align="center">
+  <img src="banner.jpg" alt="Blue Marble — Earth from space as photographed by Suomi NPP satellite" width="400">
+  <p><em>Credit: NASA/GSFC/Suomi NPP</em></p>
+</div>
+
+
+*Part of a [dataset collection](https://huggingface.co/collections/juliensimon/space-probe-and-mission-datasets-69c3fe82d410a42b1e313167) on Hugging Face.*
 
 ## Dataset description
 
-This dataset draws on Wikidata's structured knowledge base using three entity types: space missions (Q2133344), crewed spaceflights (Q1248784), and uncrewed spaceflights (Q12795915). It is maintained by the WikiProject Spaceflight community and updated as new missions are flown and documented.
+Comprehensive database of space missions -- both crewed and uncrewed -- sourced from Wikidata's structured knowledge base. Covers the full history of spaceflight from the dawn of the Space Age to the present.
 
-> **Note:** Wikidata coverage is uneven — most entries have only a name and Wikidata ID.
-> Columns with <5% data coverage are automatically dropped during pipeline processing.
+This dataset draws on Wikidata using three entity types: space missions (Q2133344), crewed spaceflights (Q1248784), and uncrewed spaceflights (Q12795915). It is maintained by the WikiProject Spaceflight community and updated as new missions are flown and documented.
 
-## Schema
+**Note:** Wikidata coverage is uneven -- most entries have only a name and Wikidata ID. Columns with <5% data coverage are automatically dropped during pipeline processing.
 
-| Column | Type | Description |
-|--------|------|-------------|
-| `wikidata_id` | string | Wikidata entity ID (e.g. Q183294) |
-| `name` | string | Mission name |
-| `operator` | string | Operating agency or organization (~13% coverage) |
 
-Additional columns (launch_date, destination, etc.) appear when Wikidata coverage exceeds 5%.
+This dataset is suitable for **tabular classification** tasks.
+
+## Schema
+
+| Column | Type | Description | Sample | Null % |
+|--------|------|-------------|--------|--------|
+| `wikidata_id` | str | Wikidata entity ID (e.g. 'Q183294' for Apollo 11); stable persistent identifier that can be used to link back to the full Wikidata entry for enrichment | Q940331 | 0.0% |
+| `name` | str | Official mission name as recorded in Wikidata (e.g. 'Apollo 11', 'Voyager 1', 'Mars Odyssey'); the English-language label from the Wikidata entity | Korabl-Sputnik 3 | 0.0% |
+| `operator` | str | Launching or operating space agency/organization (e.g. 'NASA', 'ESA', 'ISRO', 'Roscosmos', 'CNSA'); null for missions where Wikidata has no operator recorded | Soviet space program | 86.8% |
 
 ## Quick stats
 
-- **25,137** total missions in the database
-- Top operators: National Aeronautics and Space Administration (202), Alaska Department of Transportation & Public Facilities (149), Airports Authority of India (109), Soviet space program (93), Roscosmos State Corporation (85)
+- **25,159** total missions in the database
+- **668** with known launch dates
+- **1** crewed missions
+- **19** unique destinations
+- Top operators: National Aeronautics and Space Administration (199), Alaska Department of Transportation & Public Facilities (149), Airports Authority of India (110), Soviet space program (95), Roscosmos State Corporation (88)
 
 ## Usage
 
 ```python
 from datasets import load_dataset
 
+ds = load_dataset("juliensimon/space-missions", split="train")
+df = ds.to_pandas()
+```
+
+```python
+from datasets import load_dataset
+
 ds = load_dataset("juliensimon/space-missions", split="train")
 df = ds.to_pandas()
 
@@ -67,51 +81,64 @@ df = ds.to_pandas()
 if "operator" in df.columns:
     print(df["operator"].value_counts().head(10))
 
-# List all missions
-print(df[["name", "wikidata_id"]].head(20))
+# Launches per decade
+import matplotlib.pyplot as plt
+df["decade"] = (df["launch_year"] // 10) * 10
+df.dropna(subset=["decade"]).groupby("decade").size().plot(kind="bar")
+plt.ylabel("Number of Missions")
+plt.title("Space Missions by Decade")
+plt.tight_layout()
+plt.show()
+
+# Crewed vs uncrewed by operator
+if "crew_count" in df.columns and "operator" in df.columns:
+    df["crewed"] = df["crew_count"].fillna(0) > 0
+    top = df["operator"].value_counts().head(8).index
+    df[df["operator"].isin(top)].groupby(["operator", "crewed"]).size().unstack().plot(kind="bar")
+    plt.title("Crewed vs Uncrewed by Operator")
+    plt.show()
 ```
 
 ## Data source
 
-[Wikidata](https://www.wikidata.org/) SPARQL endpoint. Missions identified via:
-- Q2133344 (space mission, including subclasses)
-- Q1248784 (crewed spaceflight)
-- Q12795915 (uncrewed spaceflight)
+https://www.wikidata.org/wiki/Wikidata:WikiProject_Spaceflight
 
-Data is community-curated by [WikiProject Spaceflight](https://www.wikidata.org/wiki/Wikidata:WikiProject_Spaceflight).
+## Related datasets
 
-## Update schedule
+- [juliensimon/astronaut-database](https://huggingface.co/datasets/juliensimon/astronaut-database)
 
-Quarterly (January, April, July, October).
+- [juliensimon/space-launch-log](https://huggingface.co/datasets/juliensimon/space-launch-log)
 
-## Related datasets
+- [juliensimon/spacecraft-database](https://huggingface.co/datasets/juliensimon/spacecraft-database)
+
+- [juliensimon/deep-space-probes](https://huggingface.co/datasets/juliensimon/deep-space-probes)
+
+- [juliensimon/artemis-ii](https://huggingface.co/datasets/juliensimon/artemis-ii)
+
+- [juliensimon/astronauts](https://huggingface.co/datasets/juliensimon/astronauts)
 
-- [astronaut-database](https://huggingface.co/datasets/juliensimon/astronaut-database) -- Every person who has traveled to space
-- [launch-log](https://huggingface.co/datasets/juliensimon/launch-log) -- McDowell orbital launch log
-- [spacecraft-database](https://huggingface.co/datasets/juliensimon/spacecraft-database) -- Spacecraft catalog
-- [deep-space-probes](https://huggingface.co/datasets/juliensimon/deep-space-probes) -- Deep space probe trajectories
+- [juliensimon/cassini](https://huggingface.co/datasets/juliensimon/cassini)
 
-## Pipeline
+- [juliensimon/chemcam](https://huggingface.co/datasets/juliensimon/chemcam)
 
-Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)
+> If you find this dataset useful, please consider [giving it a like](https://huggingface.co/datasets/juliensimon/space-missions) on Hugging Face. It helps others discover it.
 
-## Support
+## About the author
 
-If you find this dataset useful, please give it a ❤️ on the [dataset page](https://huggingface.co/datasets/juliensimon/space-missions) and share feedback in the Community tab! Also consider giving a ⭐️ to the [space-datasets](https://github.com/juliensimon/space-datasets) repo.
+Created by [Julien Simon](https://julien.org) — AI Operating Partner at Fortino Capital. Part of the [Space Datasets](https://julien.org/datasets) collection.
 
 ## Citation
 
 ```bibtex
 @dataset{space_missions,
-  author = {Simon, Julien},
   title = {Space Missions Database},
+  author = {juliensimon},
   year = {2026},
-  publisher = {Hugging Face},
   url = {https://huggingface.co/datasets/juliensimon/space-missions},
-  note = {Sourced from Wikidata (CC0)}
+  publisher = {Hugging Face}
 }
 ```
 
 ## License
 
-[CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/) (Wikidata content is public domain)
+[CC0-1.0](https://creativecommons.org/licenses/by/4.0/)

data/space_missions.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c5a3c5b3c4bde81ff8fe80617dd42f203318a00375bb945ad5199c0a350dcc2
+size 423915