Jupiter's moon Ganymede, is larger than the planet Mercury!
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If two pieces of metal touch in space, they become permanently stuck together.
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The earth is .02 degrees hotter during a full moon.
157
The Earth gets 100 tons heavier every day due to falling space dust.
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Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The heart of an astronaut actually gets smaller when in outer space.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Only 55% of Americans know that the sun is a star.
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