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Astronauts become a little taller in space. There is less gravity, so their bones are less squashed together. poster yourself
Yuri Gagarin survived the first manned spaceflight but was killed in a plane crash seven years later. poster yourself
About 1500 stars are visible at night with the naked eye in a clear, dark sky. There are 88 constellations altogether. The smallest star measures about 1700 km across. It is a white dwarf called LP 327-16. poster yourself
The ancient Greeks called our galaxy the Milky Way because they thought it was made from drops of milk from the breasts of the Greek goddess Hera. poster yourself
