In the last 7 years, humanity has discovered 43 potentially habitable planets.
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There are more nerve cells in the human brain than there are stars in the Milky Way.
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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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Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
Jupiter is bigger than all the other planets combined.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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