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Ye-1A/5 Mission to Earth's Moon

Goals: This was the Soviet Union's fifth attempt at a lunar impact. The spacecraft was equipped with improved sensors as a result of interplanetary data sent back by Luna 1 and Pioneer 4.

Accomplishments: None. The spacecraft had to be destroyed by ground controllers after a gyroscope failed on the booster rocket 153 seconds after launch.

Key Dates
18 Jun 1959:  Launch (08:08 UT)
Status: Unsuccessful
Fast Facts
Ye-1A/5 Facts The launch was delayed for two days after the upper stage was accidentally filled with wrong fuel.

Failed Soviet missions often were not given names.

Cold war tensions were increasing between the Soviet Union and the U.S. as both nations launched ambitious lunar exploration efforts.
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Last Updated: 2 Dec 2010