Two Earth-sized planets hidden at the edge of our Solar System
Madrid (UPI) Jan 18, 2015
Scientists from Britain and Spain believe there could be at least two planets the size of Earth hiding at the edge of the Solar System.
They’ve observed small, icy objects that orbit the Sun beyond Neptune and Pluto with orbits consistent with objects being influenced by the gravitational pull of planets.
“The exact number is uncertain, given that the data that we have is limited —> Read More Here