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Earth satellite, Sputnik 1
The first artificial Earth satellite, Sputnik 1, was launched by the Soviet Union -
first animal launched into space
dog Laika aboard Sputnik 2 -
Luna 2
first spacecraft to hard-land on another celestial object (the Moon) -
Luna 3
first pictures of the far side of the Moon -
Yury Gagarin on Vostok 1
First human to orbit Earth -
Valentina Tereshkova on Vostok 6
first woman in space -
first space walk
Aleksey Leonov on Voskhod 2 -
first death during a space mission
Vladimir Komarov on Soyuz 1 -
Apollo 11
American astronauts walked on the surface of the Moon. -
Pioneer 10
first spacecraft to fly by Jupiter