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Apollo 13 is launched, suffering an explosion in its oxygen tanks. and the crew, the of 3 return safely.
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Luna 17 lands on the moon, with the first automatic robot, Lunokhod 1. Driven by a five-man team on earth, they traveled over surface for 11 days.
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Soviet Venera 7 is the first probe to soft-land on Venus, transmitting for 23 minutes.
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It is launched by the U.S. with the legendary Alan Shepard, Stuart Roosa and Edgar Mitchell on board. They land there and they explore with the help of a two-wheeled cart that permits the transport of a significantly greater quantity of lunar material than previous missions. Shepard was the first man to hit a golf ball on the moon.
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Soyuz 11 carried Cosmonauts of 3 to Salyut 1, the first manned occupancy of an orbital station. However, on June 29, the Cosmonauts died upon Soyuz 11's reentry.
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Pioneer 10 is launched on an Atlas towards Jupiter by the U.S., designed to familiarize alien life with humans. It returns with the first close ups of Jupiter in1973
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Pioneer 10 becomes the first man-made object to travel through the asteroid belt
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First crew to Skylab, Skylab 2, are launched, repairing damage incurred to Skylab during its launch.
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American Mariner 10 is launched, on the first dual-planet mission. Over the next year, it returned photographs of Venus and Mercury.
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NASA launches the first Synchronous Meteorological Satellite
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Soviet Salyut 4, civilian space station, is launched. It remains in orbit until February 2, 1977.
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American Apollo (18) and Soviet Soyuz 19 dock, the first international spacecraft rendezvous.
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Soviet Venera 9 and 10 send the first pictures of the Venusian surface to Earth.
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Pictures of the Martian surface are taken by Viking 1, the first U.S. attempt to soft land a spacecraft on another planet
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Viking 2 lands on Mars on the Plain of Utopia, where it discovered water frost.
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Voyagers 1 and 2 leave Earth to meet with Jupiter in 1979 and Saturn in 1980.
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Soviet Salyut 6 space station is launched. Its crews include members from Czechoslovakia, Poland, GDR, Bulgaria, Hungary, Vietnam, Cuba, Mongolia, and Romania.
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The Einstein Observatory begins its 30-day mission.
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Two Pioneer spacecraft reach Venus. One drops four probes into the atmosphere, while the other maps the surface.
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Pioneer 11 reaches Saturn, flying to within 13,000 miles and taking the first close-up photographs.