The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Some asteroids have other asteroids orbiting them.
131
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
If two pieces of metal touch in space, they become permanently stuck together.
808
The population of the Earth has more than doubled since 1950.
151
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Today's top fuel dragsters take off with more force than the space shuttle.
120
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5