The English Wikipedia article on Sputnik 1, the first artificial Earth satellite, consulted for the 4 October 1957 launch date used as the field-origin-era for the Missions and Programs, Spacecraft and Launch Vehicles categories and sections, and the Early Uncrewed Satellite and Reconnaissance Programs subcategory.
Facts
PublisherWikimedia Foundation
Source TypeOnline encyclopedia
URLhttps://en.wikipedia.org/wiki/Sputnik_1
Reliability Tier2
Sources
Wikipedia: Sputnik 1
Claims Backed By This Source (29 claims)
This source backs 29 claims across the atlas. As facts: 15 well-attested. As cited relationships: 4 holds. Plus 10 entities citing it as a general reference with no single fact or relationship attached.
Disposition By Topic
- Subcategories, 8 claims: 4 well-attested, 4 general references.
- Categories, 6 claims: 3 well-attested, 3 general references.
- Sections, 6 claims: 3 well-attested, 3 general references.
- Sources, 5 claims: 5 well-attested.
- Spacecraft, 4 claims: 4 holds.
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