Icy volcanoes on Pluto may have spewed organic-rich water
The dwarf planet has short-lived ammonia on its icy surface
HIDDEN DEPTHS Pluto sports pimple-like peaks and jagged cracks across its surface, especially to the west of heart-shaped Sputnik Planitia. Some of those cracks could be cryovolcanoes that spewed liquid water onto the surface.
Z.L. Doyle/SwRI/JHU-APL/NASA