More than 20 million meteoroids enter Earth's atmosphere every day.
139
It takes eight and a half minutes for light to get from the sun to earth.
159
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The heart of an astronaut actually gets smaller when in outer space.
216
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Jupiter is bigger than all the other planets combined.
254
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15