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.
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Summer on Uranus lasts for 21 years.
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The heart of an astronaut actually gets smaller when in outer space.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
Only 55% of Americans know that the sun is a star.
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