The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Earth is the only planet in our solar system that's not named after a god or goddess.
17
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Sound doesn't travel in space.
255
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13