A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Today's top fuel dragsters take off with more force than the space shuttle.
120
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
A comet's tail always points away from the sun.
2
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Astronauts get taller when they are in space.
224
The earth travels through space at 660,000 miles per hour.
189
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10