Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The light hitting the earth right now is 30 thousand years old.
163
Mars had an oxygen-rich atmosphere around 4 billion years ago
13