HiRISE (NASA)
HiRISE is a high resolution camera onboard the Mars Reconnaissance Orbiter (NASA). We take images of the surface of Mars. Based out of UArizona in Tucson.
Joined Aug 2018
Resistant Material in Olympus Mons Aureole Ridges
The question of how the Olympus Mons aureole formed has wide-ranging implications for Mars paleoclimate, including whether a northern ocean existed. The properties of the resistant material exposed within aureole blocks can help test the merits of competing hypotheses for the aureole’s formation.
https://uahirise.org/hipod/ESP_075502_2110
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
Tangential Craters within Ptolemaeus Crater
This image shows two small craters, just touching on their rims, in the much larger Ptolmaeus Crater, which is located in the Martian Southern Hemisphere. These craters are called “tangential craters.”
The more degraded and filled-in crater is approximately 3 kilometers in diameter, and there is an unusual feature near the center.
More: https://uahirise.org/hipod/ESP_020065_1335
NASA/JPL-Caltech/University of Arizona
Gigas Sulci
A sulcus (or sulci, plural) is defined as “subparallel furrows and ridges.” This is a purely descriptive term for landforms that could have a variety of origins.
At this location appears to be a graben (which is a fault-bounded valley) on a large scale, and locally (such as in this image) became a vent region for lava flows.
ID: ESP_040661_1890
date: 30 March 2015
altitude: 272 km
https://uahirise.org/hipod/ESP_040661_1890
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
HiRISE 10K: Layers in Western Arabia Terra
Extensive erosion in this region has exposed numerous rock layers. Layers are visible on the flanks of some hills and on the basement (the lowest rock unit) between the hills.
Full cutout on Flickr: https://flic.kr/p/2qhtV6V
HiRISE 3D: Inverted Channel and Possible Lake Deposits
The former channel had material that was more resistant to erosion than the surrounding terrain, so now stands in positive-relief in our image.
https://www.uahirise.org/anaglyph/ESP_076462_1725_ESP_084242_1725_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science #3D
Phyllosilicate-Rich Terrain in the Ejecta of an Impact Crater
The cutout shows the plains adjacent to the crater’s northwestern rim in enhanced contrast, highlighting the range of compositions sampled by the crater that exhibit a range of colors. Phyllosilicate-rich materials on Mars most commonly have relatively orange colors, whereas some of the bluer material visible here may have been less altered by interaction with water.
More: https://uahirise.org/hipod/ESP_084119_1760
NASA/JPL/University of Arizona
HiRISE 8K: Layers in Northeast Sinus Meridiani
The objective of this image is to examine the exposure of thin layers along the walls of a few-kilometer-wide valley in Sinus Meridiani.
Full cutout on Flickr: https://flic.kr/p/2qhhewm
#Mars #science
HiRISE 3D: Potential Fan Deposit in Crater near Mawrth Vallis
A fanlike deposit (visible in CTX) emerges from a valley on an impact crater wall. Detailed study of this fan could help in understanding the depositional environment and hydrologic system in the region.
https://www.uahirise.org/anaglyph/ESP_084491_1990_ESP_084425_1990_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science
Colorful Terrain Southwest of Dawes Crater
In between the craters and sand cover, the bedrock here shows a range of colors, likely reflecting a range of rock compositions that were perhaps jumbled up by the Dawes and other nearby impacts that occurred over Martian history. The enhanced color cutout shows some green/blue blocks that may contain the igneous minerals pyroxene or olivine.
https://uahirise.org/hipod/ESP_084041_1685
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
HiRISE 4K: A Ridge Network in Nili Fossae
The objective of this observation is to examine a network of small ridges. The scene is also visible in Context Camera imagery.
Full cutout on Flickr: https://flic.kr/p/2qh6vz9
HiRISE 3D: A Small Delta or Fan
Delta or fan deposits indicate past water activity. HiRISE can resolve sedimentary characteristics such as layering, stratigraphic relationship to the surrounding geologic setting that cannot be resolved by other camera experiments.
https://www.uahirise.org/anaglyph/ESP_075524_2125_ESP_084359_2125_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science #3D
The Positives and Negatives of Fissure Eruptions
Fissures on Mars are often distinguished as being linear (negative-relief) troughs or depressions such as this one (marked A in the cutout). Its edges appear raised, but that may be due to thick accumulations of wind-blown dust. Just to the south is a much narrower fissure (B) that is parallel to A but appears to be slightly raised (positive relief) with erupted material to either side.
More: https://uahirise.org/hipod/ESP_083598_1780
#Mars #science
HiClip mini 4K: Helcaraxë
This image shows a small part of what is called the South Polar residual cap, meaning that ice can persist well past the winter season on Mars. (This is a non-narrated clip with ambient sound.)
HiRISE 3D: Sulfate-Rich Cryptic Terrain in Aram Chaos
CRISM and CTX images show there are light-toned sulfates here.
https://www.uahirise.org/anaglyph/ESP_083898_1830_ESP_084267_1830_RED
NASA/JPL-Caltech/University of Arizona
Reading between the TAR
The relatively flat floor of this large crater is almost entirely covered in parallel linear dune-like features called “transverse aeolian ridges” (TAR). The colorful bedrock peeks through between the TAR and in exposed mounds throughout the crater floor.
HiRISE 3D: Down in Russell Crater
The gullies in Russell Crater do not have alcoves, but they do appear to emanate from a distinct layer.
https://www.uahirise.org/anaglyph/ESP_084464_1250_ESP_084253_1250_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science #3D
Secondaries Galore!
In this view we can see a section of a crater wall, and surrounding terrain, littered with small impact craters. Generally, the impact crater density (the number of impact craters in given surface area) is a good indication of how old a particular terrain is. The more craters we see, the older it is.
A New Crater on a Dusty Slope
This image shows a new impact site originally detected by the Context Camera onboard MRO. The crater is on a dusty slope, which also has several dark slope streaks due to dust avalanches.
A previous impact at another place on Mars triggered a major dust avalanche, but this one did not. This tells us that the dust here is more stable (stronger and/or on a lower slope).
https://uahirise.org/hipod/ESP_048686_1785
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
Lace on Mars
Channels formed by sublimation of a layer of seasonal dry ice are so dense in this area that they look like lace. Gas flow erodes channels as it escapes to the surface of the overlying seasonal ice layer seeking the path of least resistance.
https://uahirise.org/hipod/ESP_046414_0990
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
HiRISE 3D: 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.
https://www.uahirise.org/anaglyph/ESP_076244_2160_ESP_084446_2160_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science
HiRISE (NASA)
HiRISE is a high resolution camera onboard the Mars Reconnaissance Orbiter (NASA). We take images of the surface of Mars. Based out of UArizona in Tucson.
Joined Aug 2018