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Riverbeds in Reverse

Inverted river channels in central Utah look similar to features on Mars—a clue that liquid water once might have flowed in abundance on the Red Planet.


NASA Earth Observatory image created by Jesse Allen and Robert Simmon, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Photograph by Jonathan Clarke. Caption by Adam Voiland, with information from Carol Stoker and Jonathan Clarke.

Published December 4, 2012
Data acquired November 25, 2012

Sources:
EO-1 > ALI
Photograph