Astronauts get taller when they are in space.
224
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
Pluto is smaller than Russia.
9
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth travels through space at 660,000 miles per hour.
189
Today's top fuel dragsters take off with more force than the space shuttle.
120
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
