Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
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
It takes eight and a half minutes for light to get from the sun to earth.
159
The earth travels through space at 660,000 miles per hour.
189
Some asteroids have other asteroids orbiting them.
131
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The heart of an astronaut actually gets smaller when in outer space.
216
