Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The heart of an astronaut actually gets smaller when in outer space.
216
More than 20 million meteoroids enter Earth's atmosphere every day.
139
It takes eight and a half minutes for light to get from the sun to earth.
159
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The sun is 330,330 times larger than the earth!
190