New global map of Pluto

By tracking subtle changes in the motion of NASA’s Dawn spacecraft, scientists have mapped the variations in Ceres’ gravity for the first time, providing clues to the dwarf planet’s internal structure. The new data suggest that Ceres has a weak interior, and that water and other light materials partially separated from rock during a heating phase early in its history.

An international team of astronomers have discovered a new dwarf planet orbiting beyond Neptune. The object is roughly 435 miles in size, moving in a 700-year orbit that takes it more than 120 times further from the Sun than Earth. Designated 2015 RR₂₄₅, it was found using the Canada-France-Hawaii Telescope on Maunakea, Hawaii.

One of 10 studies sponsored by NASA to explore possible planetary missions includes one for a Pluto orbiter that also would venture into the Kuiper Belt.