A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Pluto is smaller than Russia.
9
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The population of the Earth has more than doubled since 1950.
151
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Mars had an oxygen-rich atmosphere around 4 billion years ago
13