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First man made object to go in space and orbit and stayed in orbit until Jan 4 1958
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Sputnik 2, carrying the dog Laika for 7 days in orbit, is launched by the U.S.S.R., and remains in orbit until April 13, 1958.
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Explorer 1, the first U.S. satellite in orbit, lifts off at Cape Canaveral using a modified ABMA-JPL Jupiter-C rocket. It carries a scientific experiment of James A. Van Allen, and discovers the Earth's radiation belt
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Tiros 1, the first successful weather satellite, is launched by the U.S
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Yuri Gagarin( a russion) was the first man to enter space in Vostok 1
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Mercury Freedom 7 carries Alan B. Shepard,Jr., the first U.S. Astronaut into space, in a suborbital flight
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Vostok 6 carries Soviet Cosmonaut Valentia Tereshkova, the first woman in space and orbits the Earth 48 times.
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The first space walk is made from Soviet Voskhod 2 by Cosmonaut Alexei A. Leonov. Duration is 12 minutes.
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Neil Armstrong was the first man to step on moon usin the apollo 11 called the eagle he and his 2 other patners did experiments there for 3 hours and then came to earth safely
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mars 2 lanched by russia was the first man made object on mars it crashed on mars by exident.