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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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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There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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It 'snows' metal on Venus.
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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