Alan Stern has never been happy with Pluto's demotion to dwarf planet. Principal investigator of NASA's New Horizons mission, he told Gizmodo the International Astronomical Union's new definition of a planet, which excludes...
Pluto may be able to reclaim its planet status once more. But, we’ve heard that before - in 2014, and again in 2015. So, why would this year be any different for the dwarf planet? Data gathered during the New Horizons...