The International Astronomical Union (IAU) currently recognizes five dwarf planets in our solar system, though there are likely many more. The most famous of the bunch is Pluto, way out beyond the ...

How do you build a planet, let alone one capable of sustaining and evolving life? The clues to the “recipe” can perhaps be found in the leftovers scattered around our solar system. Things like ...

Ceres, the largest object in the asteroid belt between Mars and Jupiter, has long perplexed planetary scientists. Once considered a planet, then an asteroid, and now officially classified as a dwarf ...

New NASA research hints that Ceres — the closest dwarf planet to Earth — may have once had an ancient "power source" that could have sparked the evolution of extraterrestrial life-forms in the tiny ...

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Five members of the science team for NASA’s Dawn mission to Ceres were excited Monday to view the clearest images ever taken of the dwarf planet. The Dawn spacecraft, which goes into orbit around ...