«It's hard to explain the regular pattern we see in so many volcanoes, all shifting in the same direction, using just our classical solid -
body tidal heating models,» said Wade Henning of the University of Maryland and NASA Goddard, a co-author of the paper.
The gravitational pull from these two
bodies also squeezes and stretches the moon itself, and all that kneading from this
tidal distortion
heats Enceladus, melting some of the water ice under the surface.