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In February of 1969, the first launch of the Soviet Moon Rocket, the N-1, exploded.  By April, the Soviets still did not have a clear program of subsequent piloted Soyuz fights. In May, the Soviets watched the successful US lunar orbital flight and practice landing of Apollo 10. In June, a Lunar Sample return mission failed when the Block D stage refused to ignite. On July 3rd the second N1 launch failed with a spectacular explosion…

Soviet Luna 15 was designed to take a sample of Lunar soil and return it to Earth

Ye-8 lunar sample return spacecraft – detail of re-entry vehicle
Credit: Mark Wade

Ye-8 Sample Return method