The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
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
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
More than 20 million meteoroids enter Earth's atmosphere every day.
139
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
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Only 55% of Americans know that the sun is a star.
986