Earth is the only planet in our solar system that's not named after a god or goddess.
17
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Sound doesn't travel in space.
255
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
41% of the moon is not visible from earth at any time.
103