Q387190

Kosmos 300 was the fourth Soviet attempt at an uncrewed lunar sample return. It was probably similar in design to the later Luna 16 spacecraft. It was launched, on a Proton rocket, on September 23, 1969. The mission was a failure. The engines on the Block D upper stage failed due to an oxidizer leak, leaving the spacecraft to burn up in Earth's atmosphere.

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1969  Wikidata
space probe, Proton-K, 

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Location: KML, Cluster Map, Maps,

1969-09-23T00:00:00Z

1969-09-23T00:00:00Z

1969 Kosmos 300

1969-09-23T00:00:00Z

1969-09-23T00:00:00Z

rocket launch

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Frameless

Type	Subtype	Date	Description	Notes	Source