In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Sound doesn't travel in space.
255
Only 55% of Americans know that the sun is a star.
986
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Buzz Aldrin’s mother’s maiden name was Moon.
9
If two pieces of metal touch in space, they become permanently stuck together.
808
