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
There are two golf balls sitting on the moon.
721
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Astronauts cannot burp in space.
232