Kosmos 300 (
Russian: Космос 300 meaning Cosmos 300) (Ye-8-5 series) was the fourth Soviet attempt at an uncrewed
lunarsample 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]
^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.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).
This article about one or more spacecraft of the
Soviet Union is a
stub. You can help Wikipedia by
expanding it.