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.
5
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are more nerve cells in the human brain than there are stars in the Milky Way.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Pluto is smaller than Russia.
9
It 'snows' metal on Venus.
13
Earth is the only planet in our solar system that's not named after a god or goddess.
17
If NASA sent birds into space they would soon die; they need gravity to swallow.
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