Uncrewed spacecraft that operate in Earth orbit, covering communications, navigation, science and observation satellites that are not otherwise part of a space station. Belongs here: any robotic craft whose operational home is Earth orbit. Does not belong here: a robotic craft whose mission target lies beyond Earth orbit, grouped under Space Probe.
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1. Wikipedia: Sputnik 1
Wikimedia FoundationSputnik 1, lead section (satellite subcategory)Quote, Sputnik 1, lead section (satellite subcategory)
It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program.
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