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pradeep negi
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Posted 5 year ago
pradeep negi 
Which was the first successful mission to land on the surface of Mars?
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Mitesh Sharma
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Posted 5 year ago Mitesh Sharma

Mariner 9 was launched successfully on May 30, 1971, and became the first artificial satellite of Mars when it arrived and went into orbit. NASA's Viking Project found a place in history when it became the first mission to land a spacecraft safely on the surface of another planet