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
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
Is That an Impact Crater?
This image was acquired to take a closer look at a circular feature that might be an impact structure on the South Polar layered deposits.
Measuring the sizes and frequency of impact craters provides a constraint on the age of the landscape. However, craters in icy terrain are modified by processes that flatten and change them in such a manner that it is hard to say for sure if it had an impact origin.
https://uahirise.org/hipod/ESP_049075_0995
NASA/JPL-Caltech/University of Arizona
HiRISE 3D: East Facing Gullies
These gullies on the western side of a large impact crater are also visible in Context Camera imagery.
https://www.uahirise.org/anaglyph/ESP_084155_1300_ESP_084445_1300_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science
Flow Ridges near a Mesa in Protonilus Mensae
The objective of this observation is to examine flow ridges that probably are the result of an old glacier that moved out of a valley from a mesa. Protonilus Mensae is region of chaos terrain. Chaos terrain is typified by regions of blocky, often steep sided, mesas interspersed with deep valleys. With time and erosion the valleys widen and the mesas become smaller.
https://uahirise.org/hipod/ESP_075403_2235
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
HiRISE 3D; Mesa Stratigraphy at Terby Crater
The 2-3 km sequence of stratigraphy captures a diverse range of sedimentary rock types that includes deposition across all of the three major Martian geologic eras.
https://www.uahirise.org/anaglyph/ESP_084422_1525_ESP_083921_1525_RED
NASA/JPL-Caltech/University of Arizona
#Mars #science
A Conical Pit
Also visible in Context Camera data, this observation highlights what is likely a sublimation collapse pit. The pit is about 170 meters across. Other interesting formations, caused by the expansion and contraction of subsurface ice, are also clearly visible.
ID: ESP_075397_0910
date: 27 August 2022
altitude: 246 km
https://uahirise.org/hipod/ESP_075397_0910
NASA/JPL-Caltech/University of Arizona
#Mars #science #NASA
HiRISE 3D: A Sinuous Ridge in Arabia Terra
Could this branching and sinuous ridge in Arabia Terra be an exhumed paleo-valley? Continuing with the two adjacent images would make a nice moasic and allow a detailed geological history to be reconstructed.
https://www.uahirise.org/anaglyph/ESP_083937_1895_ESP_083581_1895_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