Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
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 heart of an astronaut actually gets smaller when in outer space.
216
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
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