Jupiter's moon Ganymede, is larger than the planet Mercury!
149
A comet's tail always points away from the sun.
2
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
41% of the moon is not visible from earth at any time.
103
Buzz Aldrin’s mother’s maiden name was Moon.
9