It all began with a small dot moving across a computer screen.
That dot has now turned out to be a new dwarf planet, temporarily dubbed “RR245.” It’s a chunk of rock and ice about two thirds the size of California (north to south) orbiting amidst other small, icy worlds in the nether reaches of the solar system beyond Neptune.
Its discovery was announced today by an international team of astronomers. The dwarf planet is roughly 435 miles across (700 kilometers). And it’s orbit is one o