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
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The earth travels through space at 660,000 miles per hour.
189
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Summer on Uranus lasts for 21 years.
358
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15