Triton, left, and Pluto (not proven to scale) might be long-lost siblings
JPL/NASA//Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
Neptune’s largest moon, Triton, and the dwarf planet Pluto might have shared a standard origin earlier than being separated in the early photo voltaic system, an evaluation of their composition suggests.
Triton and Pluto have each been visited as soon as by spacecraft, the former by NASA’s passing Voyager 2 in 1989 and the latter by NASA’s New Horizons probe in 2015. Both are icy our bodies smaller than Earth’s moon with related densities that seem to have hosted subsurface oceans sooner or later…