Bruce Murray Space Image Library
Phobos' grooves (north polar map)
Filed under geology, explaining science, Phobos
In a 2009 paper concerning grooves on Saturn's moons and other small bodies, Sarah Morrison and coworkers argued that Phobos' grooves are consistent with fracturing due to extension along its long axis due to tidal forces from its orbit around Mars.
Sarah Morrison et al. 2009 doi:10.1016/j.icarus.2009.06.003
Original image data dated on or about June 13, 2009
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