Mars had an oxygen-rich atmosphere around 4 billion years ago
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There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
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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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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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Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
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