The heart of an astronaut actually gets smaller when in outer space.
216
The earth rotates more slowly on its axis in March than in September.
145
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Venus is the only planet that rotates clockwise.
310
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194