Earth is the only planet in our solar system that's not named after a god or goddess.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Jupiter is bigger than all the other planets combined.
254
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
41% of the moon is not visible from earth at any time.
103
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
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