The earth rotates more slowly on its axis in March than in September.
145
41% of the moon is not visible from earth at any time.
103
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Only 55% of Americans know that the sun is a star.
986
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The heart of an astronaut actually gets smaller when in outer space.
216