Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
Astronauts cannot burp in space.
232
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Venus is the only planet that rotates clockwise.
310
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9