Earth is the only planet in our solar system that's not named after a god or goddess.
17
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
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Some asteroids have other asteroids orbiting them.
131
Summer on Uranus lasts for 21 years.
358
41% of the moon is not visible from earth at any time.
103
The light hitting the earth right now is 30 thousand years old.
163