Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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
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
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