Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Pluto is smaller than Russia.
9
Today's top fuel dragsters take off with more force than the space shuttle.
120
Only 55% of Americans know that the sun is a star.
986
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Summer on Uranus lasts for 21 years.
358
More than 20 million meteoroids enter Earth's atmosphere every day.
139