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: June 8, 2021

USGS Astrogeology gears up for the 5th Planetary Data Workshop and 2nd Planetary Science Informatics & Data Analytics Meeting: A data driven endeavor!

Astrogeology Science Center (ASC) gears up for the upcoming 5th Planetary Data Workshop (PDW) and 2nd Planetary Science Informatics & Data Analytics (PSIDA) meeting, which will be held virtually from June 28 to July 2, 2021, with a registration deadline of June 23.

Date published: May 27, 2021

Curiosity Blog | Sol 3131: Recovering

The Sol 3131 plan is focused on recovering from recent anomalies. 

Date published: May 25, 2021

Curiosity Blog | Sols 3129-3130: A Familiar Scene

We started planning today hoping to see some new bedrock in our workspace, but unfortunately the weekend plan didn’t work out exactly as we had hoped.


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Year Published: 2021

The Mars Orbiter for Resources, Ices, and Environments (MORIE) science goals and instrument trades in radar, imaging, and spectroscopy

The Mars Orbiter for Resources, Ices, and Environments (MORIE) was selected as one of NASA's 2019 Planetary Mission Concept Studies. The mission builds upon recent discoveries and current knowledge gaps linked to two primary scientific questions: (1) when did elements of the cryosphere form and how are ice deposits linked to current, recent, and...

Calvin, Wendy M.; Putzig, Nathaniel E.; Dundas, Colin M.; Bramson, Ali M; Horgan, Briony H N; Seelos, Kim D; Sizemore, Hanna G; Ehlmann, Bethany L.; Morgan, Gareth A; Holt, John W; Murchie, Scott L.; Patterson, G Wesley

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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.