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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Pluto is smaller than Russia.
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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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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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It 'snows' metal on Venus.
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The sun is 330,330 times larger than the earth!
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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