CRISM (Compact Reconnaissance Imaging Spectrometer for Mars)
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Beginning 12 Aug. 2005, 11:43:00 UTC

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CRISM View is a first-of-its-kind opportunity to watch Mars through the “eyes” of the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) – as if you were riding along with it on the Mars Reconnaissance Orbiter!
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What is CRISM?

The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) is 1 of 6 science experiments on the Mars Reconnaissance Orbiter, which takes measurements of both the surface and the atmosphere of Mars.

CRISM data are used to find minerals’ spectral signatures on Mars. Different minerals form in different settings, ranging from ancient lakes and deltas to volcanic lava flows. We use the mineral evidence to understand how different geologic processes have shaped the planet over time.  CRISM also observes the polar ice caps and atmosphere to understand seasonal and year-to-year variations in the Martian weather.

Featured Images

CRISM Featured Image RSS Feed
  • NASA Confirms Evidence That Liquid Water Flows on Today’s Mars               

  • What Happened to Early Mars' Atmosphere? New Study Eliminates One Theory

  • Martian glass: Window into possible past life?                                                  

  • APL’s ​​C. Beck describes how CRISM helps researchers understand the history and formation of Valles Marineris.                         

  • Ancient Martian lake system records two water-related events                         

  • CRISM Reveals New Images of Comet Siding Spring's Coma                          

  • CRISM (shown here on NASA's Mars Reconnaissance Orbiter) delivers important new science and shows the way for past, present and future Mars rovers.

  • MESDT (Mars Exploration Student Data Teams) participants discuss Martian geology.

Latest News

September 28, 2015
NASA Confirms Evidence That Liquid Water Flows on Today’s Mars

New findings from NASA’s Mars Reconnaissance Orbiter (MRO) – including data from CRISM – provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. [more]

September 2, 2015
What Happened to Early Mars’ Atmosphere? New Study Eliminates One Theory

A new analysis of the largest known deposit of carbonate minerals on Mars suggests that the original Martian atmosphere may have already lost most of its carbon dioxide by the era of valley network formation. [more]

August 24, 2015
Opportunity Rover Busy at Work To Expand Understanding of CRISM Data

NASA’s Opportunity rover is in Mars’ Marathon Valley, beginning a long measurement campaign to understand the geologic setting and source of the smectites detected using CRISM data. [more]

June 8, 2015
Martian glass: Window into possible past life?

Researchers have used CRISM data to detect deposits of glass within impact craters on Mars; these glasses just might provide a delicate window into the possibility of past life on the Red Planet. [more]

May 5, 2015
New video: “CRISM: Exploring the Geology of Mars”

APL’s ​​Christina Beck describes how she and other researchers use data from CRISM to understand the history and formation of Valles Marineris, one of the largest canyons in the solar system.

March 25, 2015
Ancient Martian lake system records two water-related events

Researchers combined images from NASA's CTX instrument with mineralogical data from NASA's CRISM orbiting spectrometer to create a geologic history of flowing water on the surface of Mars nearly 4 billion years ago. [more]

Team Profiles

Team profile collage Read about the career paths that led members of the CRISM team into space exploration.

CRISM Spectral Library

The MRO CRISM Spectral Library is an analysis tool for interpreting CRISM data. it currently contains 2,260 spectral analyses of 1,134 Mars-analog samples, all measured under desiccating conditions so that materials that adsorb water look as they would on Mars. This was made avaialble to the community through the PDS on the day that MRO entered Mars orbit!

Hi-Res Image Map

Thousands of CRISM high-resolution images are available in easy-to-view format accessible through a searchable map. More are being added as they are converted from the full spectral data... [ more ]

Revealing Questions

What is a mineral?

A mineral is a naturally occurring crystalline chemical compound that makes up part or all of a rock.

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MSL Site Selection

CRISM has been supporting landing site selection for the Mars Science Laboratory (MSL) mission with hundreds of observations that have been converted to color and mineral indicator maps. [ more ]


In June 2011, CRISM science and operations team members received two NASA Public Service Group Achievement Awards for an outstanding mission. At the same time, CRISM's PI received a NASA Distinguished Public Service Medal.

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NASA - National Aeronautics and Space Administration The Johns Hopkins University Applied Physics Laboratory CRISM
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JHU/APL Official: D. Turney

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