Sound doesn't travel in space.
255
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
The population of the Earth has more than doubled since 1950.
151
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
It 'snows' metal on Venus.
13