Only 55% of Americans know that the sun is a star.
986
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
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
The heart of an astronaut actually gets smaller when in outer space.
216
Pluto is smaller than Russia.
9
The Earth gets 100 tons heavier every day due to falling space dust.
673
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Sound doesn't travel in space.
255