Jupiter is bigger than all the other planets combined.
254
The light hitting the earth right now is 30 thousand years old.
163
Sound doesn't travel in space.
255
Some asteroids have other asteroids orbiting them.
131
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Venus is the only planet that rotates clockwise.
310
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18