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’)this site. Images and posts from HiRISE, the high resolution camera onboard the Mars Reconnaissance Orbiter (MRO, NASA). We are based at the University of Arizona in Tucson, AZ. Enhanced color pictures are 1 km across; black and white are less than 5 km. Visit our site: uahirise.org Archive RSS ALT HiPOD: About a Crater This approximately 190-meter diameter circular depression appears to have an interesting interior shape in Context Camera data. This observation will assist in confirming that this is an impact crater and to determine what is causing the unusual interior appearance in the CTX data. (Enhanced color cutout is less than 1 km across.) ID: ESP_075274_0945 date: 17 August 2022 altitude: 247 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy uarizona Source uahirise.org 16 hours ago 20 notes HiPOD: A Sinuous Ridge in Aeolis Dorsa There are many theories about the formation of sinuous ridges on Mars. Some theories suggest these may be inverted streambeds, while others indicate they may be a glacial feature called an esker. Closer inspection of this feature may help scientists determine if this is an inverted stream bed or an esker. (Black and white is less than 5 km across; enhanced color is less than 1 km.) ID: ESP_082771_1735 date: 23 March 2024 altitude: 268 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy Source uahirise.org 3 days ago 36 notes HiPOD: Hitch-Hiking with CTX HiRISE often rides along with observations performed by the Context Camera (CTX) on the Mars Reconnaissance Orbiter. Sometimes, we will take a picture slightly before or after the CTX observation, in order to explore new terrain. Here, this trick is used to steal a glimpse of a pair of beautiful box canyons in Noctis Labyrinthus that open to the east and reveal intriguing layering. (Black and white cutout is less than 5 km across.) ID: ESP_082424_1730 date: 25 February 2024 altitude: 264 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy uarizona Source uahirise.org 4 days ago 41 notes HiPOD: Spotted Dunes near Terra Cimmeria Frost and sand are common occurrences on Mars. The bright carbon dioxide frost condenses out of the atmosphere during winter, marking a stark contrast with the dark sand dunes found here. This image reveals how the warming temperatures from the rising southern sun liberate the frost and expose the sand, initially in discrete spots. (Enhanced color cutout is less than 1 km across.) ID: ESP_081492_1215 date: 15 December 2023 altitude: 250 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy uarizona Source uahirise.org 5 days ago 27 notes HiPOD: Lavas and Grabens How far do the lavas from Arsia Mons invade the grabens here in Noctis Labyrinthus? Why is the contact so sharp? What marginal characteristics are present in the lava flows, particularly the details of the crenulations or lack thereof? (Black and white cutout is less than 5 km across.) ID: ESP_075264_1630 date: 16 August 2022 altitude: 251 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy space uarizona Source uahirise.org 6 days ago 23 notes HiPOD: Slope Monitoring in Layered Rocks This deposit of sedimentary rocks has excellent examples of recurring slope lineae (RSL). This proposed region of interest was last imaged after the 2006 dust storm and shows numerous large RSL all over the steep slopes. Once this excellent candidate RSL site is confirmed, additional images can be acquired on the neighboring candidate RSL site to the east. (Black and white is less than 5 km across; enhanced color is less than 1 km.) ID: ESP_075259_1520 date: 16 August 2022 altitude: 255 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy uarizona Source uahirise.org 1 week ago 20 notes HiPOD: A Layered Feature in a Crater in Nilosyrtis Mensae The objective of this observation is to examine a layered feature in an impact crater. The layers may represent layers of mantle from when the climate changed and the shape may be due to the wind. The scene is also found in Context Camera data. (Enhanced color cutout is less than 1 km across; black and white is less than 5 km.) ID: ESP_075257_2155 date: 16 August 2022 altitude: 291 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy Source uahirise.org 1 week ago 145 notes HiPOD: Layers in a Crater The objective of this observation is to examine light and dark layers in an impact crater in Cydonia Mensae. Our interest is in seeing if the layer boundaries are diffuse as suggested in CTX image data. Most of the layers seem to have definite boundaries. (Black and white is less than 5 km across; enhanced color is less than 1 km.) ID: ESP_075247_2125 date: 15 August 2022 altitude: 292 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy Source uahirise.org 1 week ago 52 notes HiPOD: Textures of Amazonis This observation was requested to look at some unusual surface textures in Amazonis Planitia. Some of the terrain grades into ridges that could possibly be invasive dikes or lava intruding into overlying ash. Despite the features in this image, Amazonis Planitia is one of the smoothest plains on Mars, and is located between the Tharsis and Elysium volcanic provinces, to the west of Olympus Mons. (Enhanced color cutout is at full resolution and is less than 1 km across; black and white is less than 5 km.) ID: ESP_075239_1910 date: 14 August 2022 altitude: 277 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy uarizona Source uahirise.org 1 week ago 34 notes HiPOD: A Diverse Layered Section of Nirgal Vallis Based on data from the CaSSIS instrument, this target was requested in order to provide some additional color coverage and to center on a discrete reddish layer in the exposed section of this terrain. The intent is to produce a digital terrain model to get accurate thickness and orientation measurements of the layers exposed here. (Enhanced color cutout is less than 1 km across; black and white is less than 5 km.) ID: ESP_075235_1505 date: 14 August 2022 altitude: 255 km NASA/JPL-Caltech/UArizona mars nasa science geology landscape astronomy Source uahirise.org 1 week ago 51 notes Prev Page 1 2 3 4 5 Next Page Find Us On Facebook Flickr Soundcloud Tumblr Twitter Vimeo Website YouTube Follow @HiRISE © 2020 Arizona Board of...