Pluto Probe Spies Weird 'Dark Pole' on Big Moon Charon (Photos)
Tuesday, June 23, 2015 - 18:10
in Astronomy & Space
NASA's New Horizons spacecraft has spotted a strange dark patch at the pole of Pluto's big moon Charon, further whetting researchers' appetites ahead of the probe's epic flyby of the dwarf planet system next month.