Sound doesn't travel in space.
255
Today's top fuel dragsters take off with more force than the space shuttle.
120
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Some asteroids have other asteroids orbiting them.
131
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46