Kosmos 300 (Russian: Космос 300 meaning Cosmos 300) (Ye-8-5 series) 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.[1] 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.[2]

References

  1. ↑ "Luna - Exploring the Moon". orbitalfocus.uk. Retrieved February 23, 2023.
  2. ↑ Siddiqi, Asif A. (2018). "Kosmos 300 [Luna]" (PDF). Beyond Earth: A Chronicle of Deep Space Exploration, 1958-2016. NASA History Program Office: 92. Retrieved February 23, 2023.
Preceded by
Luna 15		 Luna programme Succeeded by
Kosmos 305


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