Venus is the only planet that rotates clockwise.
310
Sound doesn't travel in space.
255
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277