The heart of an astronaut actually gets smaller when in outer space.
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Astronauts get taller when they are in space.
224
The earth travels through space at 660,000 miles per hour.
189
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
Today's top fuel dragsters take off with more force than the space shuttle.
120
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9