# Free Science and Space APIs

Page: https://free-web-services.com/web-services/science/

Science and space APIs give you NASA images and data, real-time earthquakes from around the world and the current position of the International Space Station, rocket launches and spaceflight news. Use them for education, maps and dashboards; the data is public and most of these APIs need no key.

## Services

| Service | API key | Formats | Free use |
|---|---|---|---|
| [Launch Library 2](https://free-web-services.com/web-services/science/launch-library-2.md) | Not needed | JSON | Free without a key with a low hourly request limit; supporters get higher limits. |
| [NASA APIs](https://free-web-services.com/web-services/science/nasa-apis.md) | Needed, free | JSON | Free; the shared DEMO_KEY works for trying things out, and a free personal key gives much higher limits. |
| [Spaceflight News API](https://free-web-services.com/web-services/science/spaceflight-news-api.md) | Not needed | JSON | Free and open source, no key needed. |
| [USGS Earthquake API](https://free-web-services.com/web-services/science/usgs-earthquake-api.md) | Not needed | JSON | Free, public domain data, no key needed. |
| [Where the ISS at?](https://free-web-services.com/web-services/science/where-the-iss-at.md) | Not needed | JSON | Free, no key needed, with a limit of about one request per second. |

## Questions

**Which free science and space APIs work without an API key?**  
Launch Library 2, Spaceflight News API, USGS Earthquake API and Where the ISS at? work without a key, according to their documentation. Most keyless services ask you to keep the number of requests reasonable, and some ask for a User-Agent that names your app.

**Are these science and space APIs really free?**  
The services here can be used without paying, at least on a free plan or free tier, often with limits such as a number of requests per day or non-commercial use only. The table above quotes what each service says about its free use; check the provider's own terms before you rely on it.

**How up to date is this list?**  
The address of every service is checked about once a week, and services that stop working or stop being free are removed. This list last changed on November 8th, 2026.