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Kosmos 300 Ye-8-5 Lunar Sample-Return Spacecraft

Kosmos 300 was the Soviet Ye-8-5 No. 403 lunar sample-return spacecraft launched on 23 September 1969. It reached Earth orbit but the Blok D upper stage failed its second burn for translunar injection because a fuel-injection valve stuck, leaving the payload in Earth orbit; it decayed about four days after launch and was publicly designated Kosmos 300. The spacecraft carried stereo imaging, a remote sample-collection arm, and a radiation detector.

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Identity

Aliases
Kosmos 300Kosmos-300Ye-8-5 No. 403Luna 16A
Family Name
Kosmos 300
Full Name
Kosmos 300 Ye-8-5 Lunar Sample-Return Spacecraft
Roles
sample_returnlanderresearch
Status
retired
Type
spacecraft

Details

Description
Kosmos 300 was the Soviet Ye-8-5 No. 403 lunar sample-return spacecraft launched on 23 September 1969. It reached Earth orbit but the Blok D upper stage failed its second burn for translunar injection because a fuel-injection valve stuck, leaving the payload in Earth orbit; it decayed about four days after launch and was publicly designated Kosmos 300. The spacecraft carried stereo imaging, a remote sample-collection arm, and a radiation detector.
First Flight Year
1,969
Last Flight Year
1,969
Spacecraft Specs
Launch Mass Kg
5,700

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Creation Time
August 15, 2026 at 00:13:13 UTC
Updated Time
August 15, 2026 at 00:13:13 UTC