Only 55% of Americans know that the sun is a star.
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Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
41% of the moon is not visible from earth at any time.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The heart of an astronaut actually gets smaller when in outer space.
216
The light hitting the earth right now is 30 thousand years old.
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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