2016
January
Public Domain by NASA (Image of Uranus)
| After the discovery of Pluto in 1930 it was considered the 9th planet in our solar system. However, it was demoted to dwarf planet in 2005 and we were back to 8 planets. Now evidence has been discovered that there may be an object in our solar system that is even further away than Pluto and has about 10 times the mass of the earth. |