The heart of an astronaut actually gets smaller when in outer space.
216
If two pieces of metal touch in space, they become permanently stuck together.
808
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
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 Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
41% of the moon is not visible from earth at any time.
103
More than 20 million meteoroids enter Earth's atmosphere every day.
139