There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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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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NASA invented baby food as we know it today.
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