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.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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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.
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Earth is the only planet in our solar system that's not named after a god or goddess.
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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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.
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