The accretion of new material during Pluto’s formation may have generated enough heat to create a liquid ocean that has persisted beneath an icy crust to the present day, despite the dwarf planet’s orbit far from the sun in the cold outer reaches of the solar system.
Extensional faults (arrows) on the surface of Pluto indicate expansion of the dwarf planet’s icy crust, attributed
to freezing of a subsurface ocean [Credit: NASA/Johns…
[[ This is a content summary only. Visit my website for full links, other content, and more! ]]