All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The earth travels through space at 660,000 miles per hour.
189
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The heart of an astronaut actually gets smaller when in outer space.
216
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
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
A comet's tail always points away from the sun.
2