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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Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
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The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
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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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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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It 'snows' metal on Venus.
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Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
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