Images of Pluto captured by NASA's New Horizons mission have revealed a new surprise: ice volcanoes.
A new photo analysis showed a bumpy region on Pluto that doesn't look like any other part of the small world -- or the rest of our cosmic neighborhood. Some of the domes observed in the images merge together to form even bigger mountains, Singer said. But what could have created them? Ice volcanoes. The research team also noted that the area doesn't have any impact craters, which can be seen across Pluto's surface, which suggests that the ice volcanoes were active relatively recently -- and that Pluto's interior has more residual heat than expected, Singer said.