In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The heart of an astronaut actually gets smaller when in outer space.
216
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
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
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There are two golf balls sitting on the moon.
721