On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
If two pieces of metal touch in space, they become permanently stuck together.
808
Jupiter is bigger than all the other planets combined.
254
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16