Astrogeology Science Center


Serving the nation, the international science community, planetary scientists and the general public in the pursuit of new knowledge about our Solar System.


Glossary of Terms


Date published: May 10, 2021

Curiosity Blog | Sols 3117-3118: An Abundance of Diagenetic

Today Curiosity is finishing up at a stop designed to investigate diagenetic features—features that formed after the sediment first was deposited—such as veins and color variations within the bedrock.

Date published: April 14, 2021

Working on Mars Time


Date published: April 14, 2021

Curiosity Blog | Sol 3090-3091: No MAHLI Today

The Sol 3088 drive went well, and there is lots of bedrock in the arm workspace.


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Year Published: 2021

Alternating wet and dry depositional environments recorded in the stratigraphy of Mt Sharp at Gale Crater, Mars

The Curiosity rover is exploring Hesperian-aged stratigraphy in Gale crater, Mars, where a transition from clay-bearing units to a layered sulfate-bearing unit has been interpreted to represent a major environmental transition of unknown character. We present the first description of key facies in the sulfate-bearing unit, recently observed in the...

Rapin, William; Dromart, Gilles; Rubin, Dave; Le Deit, Laticia; Mangold, Nicolas; Edgar, Lauren A.; Gasnault, Olivier; Herkenhoff, Kenneth E.; Lemouelic, S.; Anderson, Ryan; Maurice, S.; Fox, V.; Ehlmann, B. L.; Dickson, J. L.; Wiens, R. C.

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Year Published: 2021

A rock record of complex aeolian bedforms in a Hesperian desert landscape: The Stimson formation as exposed in the Murray Buttes, Gale Crater, Mars

Lithified aeolian strata encode information about ancient planetary surface processes and the climate during deposition. Decoding these strata provides insight regarding past sediment transport processes, bedform kinematics, depositional landscape, and the prevailing climate. Deciphering these signatures requires a detailed analysis of sedimentary...

Banham, Steve G.; Gupta, Sanjeev; Rubin, David M.; Edgett, Kenneth S.; Barnes, Robert; Van Beek, Jason K.; Watkins, Jessica A.; Edgar, Lauren A.; Fedo, Christopher M.; Williams, Rebecca M. E.; Stack, Kathryn M.; Grotzinger, John P.; Lewis, Kevin; Ewing, Ryan C.; Day, Mackenzie D.; Vasavada, Ashwin R.

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Year Published: 2021

Airborne dust plumes lofted by dislodged ice blocks at Russell crater, Mars

Linear dune gullies on poleward‐facing Martian slopes are enigmatic. Formation by CO2‐ice block or snow cornice falls has been proposed based on optical imagery of bright, high‐albedo features inside gully channels. Because these features often resemble patchy frost residue rather than three‐dimensional blocks, more evidence is needed to support...

Dinwiddie, Cynthia; Titus, Timothy N.