Dwarf planet intumesces before astronomers' gaze

Only Pluto and Eris larger than trans-Neptunian '2007 OR10'

Astronomers have used observations from the Kepler space telescope and the Herschel Space Observatory to determine that the trans-Neptunian object "2007 OR10" is bigger than previously thought, and now ranks third in the solar system's dwarf planet size league table, behind Pluto and Eris."