The population of the Earth has more than doubled since 1950.
151
Venus is the only planet that rotates clockwise.
310
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Astronauts get taller when they are in space.
224