When NASA’s New Horizons robotic spacecraft flew by Pluto in July 2015, it revealed clues that the enigmatic dwarf planet might have – or had at one time – a liquid ocean under its frozen surface. According to a new study published in the journal Geophysical Research Letters, such an underground ocean likely still exists today. This Pluto mosaic was made from New Horizons LORRI images taken on July 14, 2015, from a distance of 49,700...
