Pluto May Have Captured Its Biggest Moon Charon After an Ancient Dance and Kiss
Some 4.5 billion years ago, the dwarf planet Pluto was suddenly joined by a companion. For a very brief period — perhaps only hours — they danced as if arm in arm before gently separating, a grand do-si-do that resulted in Pluto and its quintet of moons orbiting the sun together today. Astronomers have long…