If two pieces of metal touch in space, they become permanently stuck together.
808
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Sound doesn't travel in space.
255
The heart of an astronaut actually gets smaller when in outer space.
216
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
The Earth gets 100 tons heavier every day due to falling space dust.
673
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219