ABOUT US: Principal & Co-Investigators 
Refereed articles   Camera Specs 
The Mars Reconnaissance Orbiter, artist impression.

HiRISE (High Resolution Imaging Science Experiment) is the most powerful camera ever sent to another planet, one of six instruments onboard the Mars Reconnaissance Orbiter. We launched in 2005, arrived at Mars in 2006 and have been imaging ever since. Our camera’s high resolution capability (imaging up to 30 centimeters per pixel) remains unprecedented for any existing orbiter in the study of the Red Planet, as well as being an indispensable instrument for helping to select landing sites for robotic and future human exploration. In the past decade, we’ve also imaged avalanches in progress, and discovered dark flows that may or may not be briny seeps. Hundreds of science papers have been published with our data.



Principal Investigator Alfred McEwen is a planetary geologist and director of the Planetary Image Research Laboratory (PIRL) at the Lunar and Planetary Laboratory, University of Arizona. His studies cover topics such as impact cratering, volcanism, slope processes, and remote sensing. He is also the principal investigator of a proposed mission to Jupiter’s hyperactive moon Io. (More)
Principal Investigator Alfred Mcewen



Deputy Principal Investigator Candice Hansen is a planetary scientist at the Planetary Science Institute. She is a co-investigator on the ultraviolet spectrograph on the Cassini mission, a co-investigator on the Juno mission now orbiting Jupiter, and on the Europa Imaging System. Her research centers on understanding the atmosphere, polar caps, and seasonal processes on Mars, Pluto, and Neptune’s moon Triton. (More)
Deputy Co-Investigator Candice Hansen



Deputy Principal Investigator Shane Byrne is associate professor and assistant department head, Lunar and Planetary Laboratory, University of Arizona. He is also the director of the Space Imagery Center, a NASA Regional Planetary Image Facility. One of his areas of work is surface processes on planetary bodies throughout the Solar System, especially those processes that affect, or are driven by, planetary ices. (More)
Co-Investigator Shane Byrne


Co–Investigator Ross Beyer is a planetary scientist with the Sagan Center at the SETI Institute, and carries out his research in the Space Science and Astrobiology Division (Planetary Systems Branch) at the NASA Ames Research Center. He’s been involved with landing site selection and certification for MER, MSL, and InSight. He also serves on the science team for the New Horizons mission to Pluto and the Kuiper Belt. He studies surface geomorphology, surface processes, remote sensing and photogrammetry of the solid bodies in our Solar System. If you can stand on it, he’s interested in what it’s like and how it got that way. (More)
Co-Investigator Ross Beyer



Co–Investigator Ingrid Daubar is a research scientist at JPL. Her research includes work on current cratering on Mars and on the Moon; seismic detections of impacts; cratering chronology and exploration hazards; landing site characterization; dust devil track lifetimes; dust mobility; and albedo changes on the surface of other planets. In addition to HiRISE/MRO, she is involved in the InSight, Juno, and Europa Clipper missions. (More)
Co-Investigator Ingrid Daubar



Co–Investigator Alan Delamere is an instrument builder who managed the final development of the Giotto camera, analyzed the resultant data, and oversees development of the instruments and spacecraft systems.
Co-Investigtor Alan Delamere



Co–Investigator Colin Dundas is a research geologist with the U.S. Geological Survey Astrogeology Science Center and is the mass wasting science theme lead for HiRISE. He studies active processes on Mars, particularly changes on slopes, and is also involved in studies of frost, ground ice, and volcanism.
Co-Investigtor Colin Dundas



Co-Investigator Paul Geissler is a research geologist at the Astrogeology Science Center of the US Geological Survey. His expertise is in image processing and remote sensing, and he is interested in geological processes across the Solar System that are active today. His studies of Mars are focused on aeolian processes, including the motion of sand dunes, the activity of dust devils, and the effects of regional and global dust storms that alter the appearance of the surface of the Red Planet over time.
Co-Investigator Paul Geissler



Co-Investigator John A. Grant is the science theme lead for landscape evolution and future landing sites for HiRISE. He is also on the science teams for the Mars Exploration Rovers Spirit and Opportunity and the Mars Science Laboratory Curiosity and serves as co-chair for the science community process for selecting the landing site for the Mars 2020 rover. His research focuses on understanding how changing degradation processes have shaped the landscape of Mars over time.
Co-Investigtor John Grant



Co–Investigator Virginia Gulick examines erosional features on Mars, looking for the tell-tale signs of running water and is science theme lead for fluvial processes for HiRISE. She has also led the development of a web-based, image target suggestion tool which will allow anyone (especially students) to offer their opinions as to which Martian features should be photographed with the MRO, and then allow them to collaborate in the analysis of the photos.
Co-Investigtor Virginia Gulick



Co-Investigator Ken Herkenhoff is a research geologist at the USGS Astrogeology Science Center and HiRISE polar geology theme lead. He is a Co-Investigator on the Mars Exploration Rover Athena science team and Payload Element Lead for the Athena Microscopic Imager. He is also a Co-Investigator on the Mars Science Laboratory ChemCam, Mastcam, MAHLI and MARDI science teams and on the Mars 2020 Mastcam-Z science team. (View more)
Co-Investigtor Ken Herkenhoff



Co-Investigator Laszlo Kestay (formerly Keszthelyi) is the science team member who oversees volcanology done with HiRISE. He is with the U.S. Geological Survey’s Astrogeology Science Center and has been involved in the Galileo, Lunar Reconnaissance Orbiter, and ExoMars Trace Gas Orbiter missions. His motto of “the more lava the better” has led to a focus on flood basalts.
Co-Investigtor Laz Kestay



Co–Investigator Randy Kirk developed unique software for photoclinometry and pioneered the application of digital photogrammetry to planetary optical and radar images, leading to the production of controlled image mosaics and digital topographic models of bodies from Venus to Triton. He is a member of the NASA Mars and Lunar Cartography Working Groups, the IAU Working Group on Cartographic Coordinates and Rotational Elements, and member (past chair) of the ISPRS Planetary Mapping Working Group. Since 2014 he has been a Scientist Emeritus at the USGS.
Co-Investigtor Randy Kirk



Co–Investigator Mike Mellon focuses on studying Martian geology and climate, including, as central link between these two, water. In his work, he investigates where water could be located and what geologic evidence can tell us about its possible planet-wide distribution. He also studies how water is related to the Martian climate and how the climate changes in time. He is the HiRISE science theme lead for glacial and periglacial processes, as well as rocks and regolith.
Co-Investigtor Mike Mellon



Co–Investigator Chris Okubo is a research geophysicist with the U.S. Geological Survey’s Astrogeology Science Center and is the science theme lead for tectonics. He is also a co-investigator with the Colour and Stereo Surface Imaging System (CaSSIS) on the ExoMars Trace Gas Orbiter. He studies faulting, folding and other deformational processes on planetary surfaces and also investigates the geologic histories of Earth and other planets through surface and subsurface geologic mapping.
Co-Investigtor Chris Okubo



Co–Investigator Lujendra Ojha is an assistant research scientist and a Blaustein postdoctoral fellow at the Johns Hopkins University. His research includes work on spectroscopy, geodynamics, geomorphology, numerical modeling, and seismology. In addition to HiRISE, he is a co-investigator on CRISM and a science team member of the InSight mission to Mars.
Co-Investigtor Lujendra Ojha



Co–Investigator Nick Thomas focuses on the study of ices on planetary bodies such as comets and Europa in addition to Mars. He joined the University of Bern in 2003 as professor of experimental physics and has subsequently led the hardware development for the BepiColombo Laser Altimeter and the camera for the ExoMars Trace Gas Orbiter, CaSSIS, for which he is also principal investigator.
Co-Investigtor Nick Thomas



Co–Investigator Cathy Weitz is the science theme lead for sedimentary and layering for HiRISE. She is also a collaborator on the science teams for the Mars Exploration Rovers (MER) and the Mars Science Laboratory (MSL) Curiosity rover. Her research focuses on mapping out the distribution and stratigraphy of sedimentary deposits in order to understand the geological processes that emplaced them.
Co-Investigtor Cathy Weitz



Co-Investigator James Wray is an associate professor at the Georgia Institute of Technology. He is also a co-investigator on MRO’s Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument, a co-investigator on the ExoMars Trace Gas Orbiter’s CaSSIS camera, and a collaborator on the Mars Science Laboratory (Curiosity rover) mission. His research centers on exploring the compositional stratigraphy of planetary surfaces (especially Mars) to infer how their environments evolved over time. He is the science theme lead for composition and photometry for HiRISE.
Co-Investigtor James Wray