Liquid water may have erupted from Pluto’s icy volcanoes, study finds

Scientists have discovered features on Pluto's surface suggesting recent volcanic activity involving liquid water. Evidence of ammonia and tectonic activity was found, analyzed from NASA's New Horizons probe data. Ammonia mixed with water from Pluto's underground ocean led to cryovolcanism, where liquid water erupted through surface cracks. Radioactive heat from Pluto's ores keeps its interior warmer, allowing ammonia to remain liquid despite the cold surface temperatures.

What is cryovolcanism and how is it related to Pluto?

What factors contribute to the warmth of Pluto's interior compared to its surface?