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Sputnik 1 successfully launched and entered Earth's orbit.
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Laika became the first animal launched into orbit, paving the way for human spacefligh
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Explorer 1 became the first successfully launched satellite by the United States when it was sent to space
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First Lunar Rover was the first spacecraft to reach the vicinity of the Earth's Moon
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he became the first human to orbit Earth. Gagarin's spacecrafthttps://en.wikipedia.org/wiki/Yuri_Gagarin
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Alan Bartlett Shepard Jr. was an American astronaut test pilot. In 1961 he became the first American to travel into spacehttps://en.wikipedia.org/wiki/Alan_Shepard
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John Glenn astronaut and United States Senator from Ohio In 1962, he became the first American to orbit the Earthhttps://en.wikipedia.org/wiki/John_Glenn
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A space rendezvous is an orbital maneuver during which two spacecraft arrive at the same orbit and approach vary close to each other https://en.wikipedia.org/wiki/Space_rendezvous
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Project Gemini was NASA second spaceflight program Conducted between projects Mercury and Apollohttps://en.wikipedia.org/wiki/Project_Gemini
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first manned mission of the United States Apollo programhttps://en.wikipedia.org/wiki/Apollo_1
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second manned spaceflight mission in the United States
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spaceflight that landed the first two humans on the Moonhttps://www.nasa.gov/mission_pages/apollo/missions/apollo11.html