What the IAU should have done in 2006, and could easily do moving forward, is to crystallize the definition of the word "planet" as unambiguously as it defined the boundaries of the constellations in..
Scientists are puzzled by a new image taken by NASA's Dawn spacecraft, which found two bright spots on the dwarf planet Ceres. The spots are noticeably brighter than other parts of the surface, which..
New research announced today describes the finding that many of the mysterious objects that populate orbits between Jupiter and Neptune are in fact comets. Cross-dressing comets! Live and let live is..
A group of Ukrainian astronomers took out their frustration with the imperial actions of Russia's president by naming a star after him. And so it is that with only a small fee and a little impish inge..
A weird hexagon-shaped vortex that's been swirling above Saturn's north pole for at least 30 years. The vortex over Saturn spans about 20,000 miles (30,000 km) across, with air currents racing 200 mph..
The scientific term for the phenomenon is "perigee moon." Full Moons vary in size because of the oval shape of the Moon's orbit. The Moon follows an elliptical path around Earth with one side ("perige..
NASA's Cassini spacecraft has documented the formation of a small icy object within the rings of Saturn. Informally named "Peggy," the object may be a new moon. Details of the observations were publis..
New global imaging and topographic data from MESSENGER show that the innermost planet has contracted far more than previous estimates indicated. The results are based on a global study of more than 5,..