A comet's tail always points away from the sun.
2
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
Astronauts cannot burp in space.
232
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
There are two golf balls sitting on the moon.
721
Jupiter's moon Ganymede, is larger than the planet Mercury!
149