Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Sound doesn't travel in space.
255
Earth is the only planet in our solar system that's not named after a god or goddess.
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