NASA launched the last space probe in the Mariner Program, Mariner 10.
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A giant ball of fire was seen arching across the sky from Michigan to Pennsylvania.
NASA's Columbia Space Shuttle landed at the Kennedy Space Center, concluding mission STS-90.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
Enos, the chimpanzee, was launched into space on the Mercury-Atlas 5 Mission.
After a four-month journey, the Venera 14 spacecraft landed on Venus.
