Pluto’s Surprising Geology: Glaciers, Mountains, and a Hint of Ocean
The 2015 New Horizons flyby revealed Pluto as a geologically active world, with flowing nitrogen glaciers in Sputnik Planitia, towering water-ice mountains, a blue haze in its atmosphere, and hints of a subsurface liquid ocean, challenging the idea of a lifeless, frozen relic and suggesting distance and cold don’t preclude internal activity.