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
The earth travels through space at 660,000 miles per hour.
189
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Some asteroids have other asteroids orbiting them.
131
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The earth is .02 degrees hotter during a full moon.
157
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