Astronauts get taller when they are in space.
224
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Pluto is smaller than Russia.
9
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Some asteroids have other asteroids orbiting them.
131
Jupiter is bigger than all the other planets combined.
254
The earth is .02 degrees hotter during a full moon.
157
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277