The heart of an astronaut actually gets smaller when in outer space.
216
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Today's top fuel dragsters take off with more force than the space shuttle.
120
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
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
