The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Sound doesn't travel in space.
255
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
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The earth travels through space at 660,000 miles per hour.
189
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121