The theory of plate tectonics describes how a planet's lithosphere is divided into a global network of multiple rigid blocks (plates) that move relative to each other, accommodating deformation primarily in narrow zones around the edges of the plates. Earth is the only planetary body known to operate under a plate tectonic system. Other terrestrial planets lack fully developed, present day plate tectonics, though Venus may demonstrate localized subduction-like behavior (Davaille et al., 2017) and Mars may have experienced plate tectonic-like behavior in its early history (e.g., Nimmo & Stevenson, 2000). Analyses of plate-like motions on Jupiter's moon Europa have provided insight into the formation and evolution of specific feature types and provided a means of testing processes and assumptions based on terrestrial plate tectonics (Schenk & McKinnon, 1989). The sequential reconstruction of Europa's surface in northern Falga Regio by Kattenhorn and Prockter (2014) raised the possibility of a full plate tectonic system operating on Europa. If true, Europa would be the only known world besides Earth to have plate tectonics. This result is of interest for studies of comparative planetology, and raises questions
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