More than 20 million meteoroids enter Earth's atmosphere every day.
139
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
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
The population of the Earth has more than doubled since 1950.
151
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
If you went out into space, you would explode before you suffocated because there's no air pressure.
149