If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
41% of the moon is not visible from earth at any time.
103
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
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Sound doesn't travel in space.
255
A comet's tail always points away from the sun.
2