Images from the High Resolution Imaging Science Experiment (HiRISE) on board the Mars Reconnaissance Orbiter (NASA). We are based out of the Lunar and Planetary Laboratory at the University of Arizona in Tucson, AZ. https://uahirise.org
HiPOD: Dunes and Bedrock These sand dunes in a crater south of Mawrth Vallis are being monitored to measure changes. However, active dunes also clear the dust off of the bedrock between the dunes, which may have diverse colors and compositions. https://uahirise.org/hipod/ESP_062863_1980 #Mars
HiRISE 10K: Stratigraphy of the North Polar Deposits This image shows an example of layers in the Martian North Polar deposits. These deposits are composed mainly of water ice and small amounts of dust. Full cutout on Flickr: https://flic.kr/p/2ssnadJ #Mars #NASA #science
HiPOD: Depressions in Deuteronilus Mensae The objective of this suggestion is to determine the nature of depressions, some of which have high, steep walls. Pictures like this one will help us determine how this material evolves over time. https://uahirise.org/hipod/ESP_077171_2255 #Mars #NASA
HiRISE 8K: Reading the Rock Record at Nili Fossae This image captures a record of changing environments on ancient Mars, as recorded in the rock record at Nili Fossae. Full cutout on Flickr: https://flic.kr/p/2ssodVn NASA/JPL-Caltech/University of Arizona #Mars #NASA #science
HiPOD: Mantling and Glacial Erosion This observation features a mantled impact crater with a good exposure of bedrock on the nothern part of the rim. Other areas of bedrock show signs of erosion. The central pit may also be possibly mantled. https://uahirise.org/hipod/ESP_077151_2185 #Mars #NASA
HiRISE 4K: Russell Crater Sand Dunes Channels down the face of the largest dune show dark spots where the sublimation of the seasonal carbon dioxide ice cap has begun. Full cutout on Flickr: https://flic.kr/p/2ss1KXC NASA/JPL-Caltech/University of Arizona #Mars #NASA #science
HiRISE 3D: Anaglyph Gullies Our science goal? To look for changes in the gullies, including possibly fresh deposits of material. https://www.uahirise.org/anaglyph/ESP_084450_1285_ESP_092335_1285_RED NASA/JPL-Caltech/University of Arizona #Mars #NASA #science
HiPOD: Hydrated Sulfates in Columbus Crater From HiWish: “An area of mineralogic interest identified by CRISM, which lacks HiRISE coverage.” Sulfate-rich rock outcrops on Mars may be a good location to search for evidence of past life on the planet. https://uahirise.org/hipod/ESP_077152_1510
HiRISE 3D: Hale Crater Gullies The gullies are very deeply incised with extensive debris aprons. There are piles of material (boulders? snowpack?) that clog some of the gully channels. https://www.uahirise.org/anaglyph/ESP_092232_1450_ESP_092311_1450_RED NASA/JPL-Caltech/University of Arizona
HiPOD: Periglacial Terrain in Protonilus Mensae With this observation, the existing periglacial mantle near a previous image can be better constrained across this area. Futher up from this pic, the terrain appears scoured and the mantle is discontinous. https://uahirise.org/hipod/ESP_077144_2250
HiRISE 3D: Layered Deposits of a Pollywog Crater A “pollywog” defines an exit breach possibly feeding candidate fluvial or lake sediments to a young crater at the equator. https://www.uahirise.org/anaglyph/ESP_092536_1830_ESP_092760_1830_RED NASA/JPL-Caltech/University of Arizona #Mars #NASA
HiPOD: Avalanche Season Avalanches have been observed at this scarp, north of the another location with such activity. Monitoring this site is key to constrain the frequency of avalanches and timing of the onset of “avalanche season”. https://uahirise.org/hipod/ESP_077162_2650 #Mars #NASA
HiPOD: In the Wake of Ancient Lava Flows Long ago, a large lava flow passed through the Athabasca Valles region of Mars. We can tell which direction it was flowing by examining the surface of the flow and the remaining “lava wakes.” https://uahirise.org/hipod/ESP_075360_1840 #Mars #science #NASA
Mars Express Captures 'Metallic' Waves Rolling Across an Ancient Martian CraterWhen we think of Mars as the “Red Planet”, the image that comes to mind is just that - a lot of red. That comes from the oxidization of the dust and rocks that cover the planet's surface, but there are some instances where the Red Planet still has a few visual tricks up its sleeve. One such trick was recently captured by the European Space Agency’s venerable Mars Express orbiter, which captured what seems to be a set of metallic waves inside a giant impact basin. But on closer inspection, it becomes clear they aren’t liquid metal or some sort of alien architecture, but a manifestation of...www.universetoday.comA newly found world blurs the boundary between planet and moon
A newly found world blurs the boundary between planet and moonThe object orbits a brown dwarf that orbits a star, and astronomers aren’t sure if it’s a planet, a moon — or something else entirely.www.sciencenews.orgHiPOD: Cliffs of Ice Sometimes a feature like a cliff cuts through the terrain and gives us a glimpse of buried icy material. The cliff in this image is one example out of a few dozen that are known. More: https://uahirise.org/hipod/ESP_074914_1225 NASA/JPL-Caltech/University of Arizona #Mars
HiRISE 3D: Ice Margin This eerie-looking image shows us the icy margin of a lobe-shaped debris apron. What geological dynamics are at play here? https://www.uahirise.org/anaglyph/ESP_092715_1370_ESP_092504_1370_RED NASA/JPL-Caltech/University of Arizona #Mars #NASA #science
HiPOD: A Crop of Gullies The objective of this observation is to examine large gullies within an impact crater in Terra Cimmeria. There are not too many large gullies in this area, but this crater has many of them. https://uahirise.org/hipod/ESP_077114_1345 #Mars #science #NASA
HiRISE 3D: Small and Recent Craters here are distinctive in day and night infrared, relatively abundant over this area: are these primaries or secondaries? We can look for directional indicators. https://www.uahirise.org/anaglyph/ESP_092211_1630_ESP_092936_1630_RED #Mars #NASA #science
HiPOD: Deposits and Flows We are observing how surface flow patterns in the area vary with distance from the proposed parent crater. This is one of several flow feature observations being suggested in the vicinity of the crater to the east of here. https://uahirise.org/hipod/ESP_077165_1440