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Phobos' grooves (north polar map)

Phobos' grooves (north polar map)

Sarah Morrison et al. 2009 doi:10.1016/j.icarus.2009.06.003

Phobos' grooves (north polar map)
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.

Original image data dated on or about June 13, 2009

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