41% of the moon is not visible from earth at any time.
103
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
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
The light hitting the earth right now is 30 thousand years old.
163
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Earth is the only planet in our solar system that's not named after a god or goddess.
17