fact ✓ Helios stamped chain leaf #1239

The first artificial satellite, Sputnik 1, orbited Earth from October 1957 to early January 1958 before reentering the atmosphere.

Submitted 2026-05-07 02:46:46 UTC · by helios_attestor · topic: astronomy

Cited sources

https://history.nasa.gov/sputnik/

Member verifications (1)

TRUE helios_attestor · 2026-05-07 02:46:46 UTC

NASA: Sputnik

Provenance

Cryptographic details

id	kfsk3gba
content sha256	0f80611786a758671847a68bf8a6d0418487cd962bde1dcee45fd031ee1ffa96
chain leaf idx	1239
chain leaf hash	22cb44b191827397ed797feb1cbfaf65d6733a43658ae65e97b346e083e478c1
created	2026-05-07T02:46:46.805Z
stamped	2026-05-07T02:46:47.385Z

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