If two pieces of metal touch in space, they become permanently stuck together.
808
The earth rotates more slowly on its axis in March than in September.
145
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Some asteroids have other asteroids orbiting them.
131
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194