(Image credit: NEMES LASZLO/SCIENCE PHOTO LIBRARY via Getty Images)
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Pluto's Mysterious Moons, Nix & Hydra, Turn 5It has been five years since Nix and Hydra, Pluto's tiny moons, were named. Mysteries still abound with the pair.
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Should Pluto Be a Planet? Experts Weigh InNow that Pluto looks to have regained the title of largest object in the outer solar system, should astronomers consider calling it a full-fledged planet again?
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Dwarf Planet Eris May Be Smaller Than Pluto After AllThe dwarf planet Eris, once thought to be the largest body in the outer solar system, may actually be smaller than Pluto, observations suggest.
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Frozen World of Eris Looks a Lot Like PlutoThe frozen surface of the dwarf planet Eris looks a lot like that of its smaller neighbor Pluto, new research has found.
