The sun puts out more power in 1 second than mankind has ever used within human existence.
14
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
41% of the moon is not visible from earth at any time.
103
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
If two pieces of metal touch in space, they become permanently stuck together.
808