This image of Europa shows dark scalloped features that seem to have started in the center of the features and spread apart.

This image of Europa shows dark scalloped features that seem to have started in the center of the features and spread apart.

This image of Europa shows dark scalloped features that seem to have started in the center of the features and spread apart.

The source of this material is Windows to the Universe, at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). © The Regents of the University of Michigan. All Rights Reserved. Site policies and disclaimer