Science & Math · head-to-head
NASA vs SHARE
NASA's Open APIs give programmatic access to imagery and data from missions across the agency — the Astronomy Picture of the Day, Mars rover photos, near-Earth object tracking, and Earth-imagery archives among them. A free registered key raises the shared DEMO_KEY's 30-requests/hour limit to 1,000 requests/hour. All endpoints return JSON.
SHARE (now internally rebranded "trove", version 26.0.0 as of this check) is the Center for Open Science's free aggregator of metadata about research and scholarly activity, pulling in tens of millions of records from sources like CrossRef and OSF and re-indexing them for keyless search. Its v2 API exposes an Elasticsearch-backed search endpoint plus RSS and Atom feeds, all reachable with no registration.
| NASA | SHARE | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON | JSON, RSS, Atom |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
SHARE supports 3 response formats, while NASA offers fewer — pick SHARE for more integration flexibility.