There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
If two pieces of metal touch in space, they become permanently stuck together.
808
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Today's top fuel dragsters take off with more force than the space shuttle.
120
The heart of an astronaut actually gets smaller when in outer space.
216
Astronauts get taller when they are in space.
224
