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
The light hitting the earth right now is 30 thousand years old.
163
It takes eight and a half minutes for light to get from the sun to earth.
159
The earth rotates more slowly on its axis in March than in September.
145
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
Venus is the only planet that rotates clockwise.
310
The population of the Earth has more than doubled since 1950.
151