A comet's tail always points away from the sun.
2
Pluto is smaller than Russia.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
There are two golf balls sitting on the moon.
721
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277