All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Only 55% of Americans know that the sun is a star.
986
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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