Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
If two pieces of metal touch in space, they become permanently stuck together.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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The heart of an astronaut actually gets smaller when in outer space.
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Astronauts get taller when they are in space.
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Lightning strikes about 6,000 times per minute on this planet!
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