The earth travels through space at 660,000 miles per hour.
189
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The heart of an astronaut actually gets smaller when in outer space.
216
There are two golf balls sitting on the moon.
721
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
The earth rotates more slowly on its axis in March than in September.
145
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