A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
It 'snows' metal on Venus.
13
Sound doesn't travel in space.
255
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Earth is the only planet in our solar system that's not named after a god or goddess.
17
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175