Thousands of worlds may lurk beyond Pluto — and a stunning new animation shows them all
Monday, 20 March 2017 () · *A new animation shows the orbits of hundreds of dwarf planets beyond Pluto.*
· *The astronomer who compiled the data says it may capture just a small fraction of dwarf planets in the solar system.*
· *Meanwhile, a new definition of "planet" by a small group of astronomers may recategorize many dwarf planets and moons as...