Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Pluto is smaller than Russia.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Today's top fuel dragsters take off with more force than the space shuttle.
120
If two pieces of metal touch in space, they become permanently stuck together.
808
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9