If two pieces of metal touch in space, they become permanently stuck together.
808
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118