41% of the moon is not visible from earth at any time.
103
A comet's tail always points away from the sun.
2
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The earth travels through space at 660,000 miles per hour.
189
Buzz Aldrin’s mother’s maiden name was Moon.
9