Pluto is smaller than Russia.
9
Some asteroids have other asteroids orbiting them.
131
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
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
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82