The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
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
Astronauts get taller when they are in space.
224
Summer on Uranus lasts for 21 years.
358
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The earth is .02 degrees hotter during a full moon.
157