Sound doesn't travel in space.
255
Summer on Uranus lasts for 21 years.
358
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Only 55% of Americans know that the sun is a star.
986
The light hitting the earth right now is 30 thousand years old.
163
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82