The earth travels through space at 660,000 miles per hour.
189
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
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
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5