The earth rotates more slowly on its axis in March than in September.
145
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
41% of the moon is not visible from earth at any time.
103
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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