Jupiter's moon Ganymede, is larger than the planet Mercury!
149
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Lightning strikes about 6,000 times per minute on this planet!
158
Astronauts get taller when they are in space.
224
The earth is .02 degrees hotter during a full moon.
157
Pluto is smaller than Russia.
9
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
