In the last 7 years, humanity has discovered 43 potentially habitable planets.
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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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Earth is the only planet in our solar system that's not named after a god or goddess.
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Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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