More than 20 million meteoroids enter Earth's atmosphere every day.
139
The earth rotates more slowly on its axis in March than in September.
145
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
A comet's tail always points away from the sun.
2
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178