The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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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
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
If NASA sent birds into space they would soon die; they need gravity to swallow.
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9