41% of the moon is not visible from earth at any time.
103
Pluto is smaller than Russia.
9
Some asteroids have other asteroids orbiting them.
131
Today's top fuel dragsters take off with more force than the space shuttle.
120
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Astronauts get taller when they are in space.
224