The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The light hitting the earth right now is 30 thousand years old.
163
Sound doesn't travel in space.
255
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
A comet's tail always points away from the sun.
2