Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Earth is the only planet in our solar system that's not named after a god or goddess.
17
There are two golf balls sitting on the moon.
721
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Jupiter is bigger than all the other planets combined.
254
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The earth rotates more slowly on its axis in March than in September.
145