Liquid Nitrogen Upwelling Discovered on Pluto

The findings, published July 31 in the Planetary Science Journal, draw parallels between Pluto’s geology and terrestrial glaciers. On Earth, dark surface features often indicate areas dampened by rainfall or rising meltwater. Given that Pluto’s frigid atmosphere precludes liquid precipitation, researchers conclude the nitrogen must be originating from beneath the glacier itself.

Principal Investigator Alan Stern noted that the discovery highlights the dwarf planet's ongoing geological activity. Sputnik Planitia, a nitrogen-ice expanse larger than Texas and Oklahoma combined, features convection cells and dark linear patterns that suggest recent fluid movement. By comparing these formations to Earth’s glacial processes, scientists have identified a previously unrecognized mechanism for surface alteration on the dwarf planet, proving that Pluto remains a dynamic, evolving world.