1) Any free-moving liquid in outer space will form itself into a sphere, because of its surface tension.
2) Astronauts cannot burp(expel gas from the stomach) in space.
3) An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
4) The Milky Way galaxy we live in is one among the BILLIONS in space.
5) Sound doesn't travel in space. And astronauts get taller when they are in space.
6) In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces.
7) If two pieces of metal touch in space, they become permanently stuck together.
8) We are moving through space at the rate of 530km a second.
9) Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
10) SETI is the Search for Extra Terrestrial Intelligence - the program that analyzes radio signals from space for signs of intelligent life.
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