The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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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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Jupiter is bigger than all the other planets combined.
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There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
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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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