Earth is the only planet in our solar system that's not named after a god or goddess.
17
It 'snows' metal on Venus.
13
Summer on Uranus lasts for 21 years.
358
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
There are more nerve cells in the human brain than there are stars in the Milky Way.
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