The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Sound doesn't travel in space.
255
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
41% of the moon is not visible from earth at any time.
103
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A comet's tail always points away from the sun.
2
Only 55% of Americans know that the sun is a star.
986