HiPOD: On Frozen Ground The presence of these widespread patterns on Mars present valuable clues as to the occurrence or absence of ice in the subsurface. uahirise.org/hipod/ESP_0667… NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: The Persistence of Dust The cone in this image is located just northwest of Ulysses Patera, a shield volcano within the Tharsis volcanic province. More: uahirise.org/ESP_087831_1860 NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: Contact! This image captures the edge of a lava flow that partially buries older terrain. Where the edge of the lava flow made contact with the higher-standing topography, it formed a rumpled and ridged surface. More: uahirise.org/ESP_087858_1505 #Mars #NASA #science

It was 20 years ago today... MRO launched on Aug 12, 2005, carrying onboard the best camera ever sent to another planet: HiRISE!

HiPOD: Icy Flow in Protonilus Mensae This scene is of a tongue of material in Protonilus Mensae as it separates from a high-standing area that shows evidence of layering. More: uahirise.org/ESP_087996_2245 NASA/JPL-Caltech/University of Arizona #Mars #NASA #science

HiPOD: Folded Layers in Candor Chasma Here , we get a glimpse of a layered sedimentary deposit on the canyon floor. Some regularly repeating process produced laminations several meters thick. uahirise.org/ESP_088251_1725 NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: Collapsing in Promethei Terra The objective of this observation is to examine a depression on a crater floor that may have been formed by collapse. There are also wide fractures along one side. uahirise.org/hipod/ESP_0761… NASA/JPL-Caltech/University of Arizona #Mars #NASA

HiPOD: Spring Fans at Macclesfield Gas blowing out from under the ice carries with it a load of dust that is deposited on the surface in a direction determined by the wind at the time of the eruption. uahirise.org/hipod/ESP_0644… NASA/JPL-Caltech/University of Arizona #Mars #NASA

HiPOD: Pit Craters and Giant Volcanoes In this image, the ceiling of a lava tube collapsed in one spot and made this pit crater. The pit is about 50 meters (150 feet) across, so it’s likely that the underground tube is also at least this big. uahirise.org/hipod/ESP_0658… #Mars

HiPOD: A Layered Butte East of Tinjar Valles The objective of this observation is to determine the nature of a layered butte that is surrounded by concentric fractures. A collapse feature? uahirise.org/hipod/ESP_0762… NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: Not Wizard and Glass, but Dunes and Gullies Two previous images at this site show dunes and gullies; this observation provides a chance to reexamine both for changes. Dunes have slip face striations suggesting recent sand avalanches. uahirise.org/hipod/ESP_0762… #Mars #NASA

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HiPOD: A Mesa in Southern Utopia Planitia The “collarlike” shapes we see in this observation may indicate the deflation of old flow units. With a stereo pair, we can investigate if the collar is at a constant elevation. uahirise.org/hipod/ESP_0762… #Mars #NASA

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HiPOD: Layers at the Edge The objective of this observation is to examine rock layers along the edge of a mesa that was created from a pedestal crater. uahirise.org/hipod/ESP_0763… NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: The Possibilities of Pyroxene This observation request is based on a strong parameter signature of pyroxene coming from the latest CRISM multispectral survey data release. uahirise.org/hipod/ESP_0763… NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

HiPOD: Monitoring Active Gullies Monitoring of gullies by HiRISE could help scientists better understand the conditions where the gullies are active, and in doing so, help understand how they form. uahirise.org/hipod/ESP_0637… NASA/JPL-Caltech/University of Arizona #Mars #science