A series of Russian spacecraft, in operation from the 1960s ...
A rival global positioning system developed by China that ...
The Naro-1 is the first south korean orbital launch ...
Three cosmonauts have died during the space shuttle landing ...
UFOs are unidentified aircraft which are attributed to ...
On April 23, 1967 the Soviet Union's shuttle Union 1 had ...
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用語
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10
1
23
40
4
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