41% of the moon is not visible from earth at any time.
103
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
Lightning strikes about 6,000 times per minute on this planet!
158
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
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
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
The population of the Earth has more than doubled since 1950.
151