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
HiPOD: A Window into the Past
The layered sedimentary deposits inside the giant canyons of Mars have puzzled scientists for decades. These light toned deposits have fine, horizontal laminations that are unlike the rugged rim rock of the Valles Marineris.
Various ideas for the origin of the layered sediments have suggested lake deposits, wind blown dust and sand, or volcanic materials that erupted after the canyon was formed, and possibly filled with water.
HiRISE 3D: An Impact Crater and Ejecta
The goal of this awesome observation is study crater ejecta composition to give insights into the properties of Mars surface material.
https://www.uahirise.org/anaglyph/ESP_083244_1910_ESP_082677_1910_RED
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiPOD: Where Does the Sand Come From?
This image shows one possible place where sand grains are being produced on Mars today. Discovered in images from the Context Camera, this region exhibits dark material that is being eroded from dark layers in the bedrock of a semicircular depression near the boundary of the Southern highlands and the Northern lowlands.
More: https://uahirise.org/hipod/ESP_051780_1725
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiRISE 3D: A Mantling Unit in Tithonium Chasma
The goal for this 3D image is to measure thickness of a mantling unit and to test if the thickness is globally consistent.
https://www.uahirise.org/anaglyph/ESP_083149_1750_ESP_083083_1750_RED
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiPOD: Defrosting Dunes within Chasma Boreale
This image shows a dune field in Chasma Boreale, which is a large trough that cuts into the North Polar ice cap. Some of the dunes in this image are quite long and sinuous with a slight bulge at one end like a “head,” giving it the appearance of a snake.
ID: ESP_052418_2650
date: 1 October 2017
altitude: 319 km
HiRISE 3D: Chaos Terrain near Source of Osuga Valles
This image enables high-resolution crater-based surface age dating of this chaos terrain, giving us a valuable piece of information about the sequence of events in this area.
https://www.uahirise.org/anaglyph/ESP_083055_1630_ESP_082989_1630_RED
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiPOD: Geyser Season
The thick coating of carbon dioxide ice that accumulated over the winter begins to sublimate (turn to vapor) as the sun rises higher in the sky and warms the ice. Sunlight penetrates through the transparent ice, and is absorbed at the base of the ice layer. The gas that forms as a result of the warming escapes through weaknesses in the ice and erupts in the form of magnificent geysers of gas and dust.
https://uahirise.org/hipod/ESP_056082_0945
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiRISE 3D: A Fresh Crater near Ice-Rich Terrain
This small crater is possibly the origin of some of the nearby secondary impacts observed on glacier-like forms.
https://www.uahirise.org/anaglyph/ESP_083254_1295_ESP_083188_1295_RED
NASA/JPL-Caltech/UArizona
#Mars #science #3D
HiPOD: Big Fans
Alluvial fans are fan-shaped deposits emerging from regions of steep topography. Alluvial fans on Mars are thought to be ancient and record past episodes of flowing water. This image shows part of one of those fans, which has been eroded.
HiPOD: Dramatic Changes over the South Polar Residual Cap
The South Polar residual cap is composed of carbon dioxide ice that persists through each Martian summer. However, it is constantly changing shape.
The slopes get more direct illumination at this polar location, so they warm up and sublimate, going directly from a solid state to a gaseous state. The gas then re-condenses as frost over flat areas, building new layers as the older layers are destroyed.
HiPOD: Three Channels Exiting a Crater Lake
This image shows a roundish crater with three channels breaching the rim and extending to the south. The crater has been filled by sediments and may have been an ancient lake.
When the water began to overtop the crater rim, it would rapidly erode a channel and, at least, partially drain the lake.
ID: ESP_053670_2180
date: 7 January 2018
altitude: 296 km
https://uahirise.org/hipod/ESP_053670_2180
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
HiRISE 3D: Hebes Chasma Layered Deposits
This image provides good exposure of layered deposits in the central mesa of Hebes Chasma. Our 3D pic is useful for understanding the process that formed the layers. Also look for fine detail in the layer bedding.
https://www.uahirise.org/anaglyph/ESP_083043_1790_ESP_083188_1790_RED
NASA/JPL-Caltech/UArizona
#Mars #science
HiPOD: Among the Peaks of Hale Crater
This observation was requested as part of a new monitoring sequence, to try to get activity after a dust storm to compare with a previous sequence. Are the recurring slope lineae longer or more dense? Hale was created by an impactor roughly 35 kilometers (22 mi) across that impacted at an oblique angle about 3.5 to 3.8 billion years ago.
ID: ESP_075380_1440
date: 25 August 2022
altitude: 256 km
https://uahirise.org/hipod/ESP_075380_1440
NASA/JPL-Caltech/UArizona
#Mars
HiRISE 3D: Persbo Crater
This image captured both the central peak and the wall rock of Persbo Crater. Images from lower resolution datasets show rock outcrops in these locations. It may be that columnar joints are visible in the older lavas.
https://www.uahirise.org/anaglyph/PSP_010836_1885_ESP_081663_1885_RED
NASA/JPL-Caltech/UArizona
HiPOD: Embayed Ridges in Alba Patera
A deposit, interpreted as a debris-covered glacier or glaciers akin to lobate debris aprons or lineated valley fill, embays a group of ridges near the western edge of the Alba Patera caldera complex. Most other such deposits on Alba Patera’s caldera walls do not encounter any topographic obstacles. The deposit also bears surface textures, possibly associated with the desiccation of ice-rich material.
https://uahirise.org/hipod/ESP_075356_2205
NASA/JPL-Caltech/UArizona
#Mars
HiPOD: The Niagara Falls of Mars
Various researchers are often pre-occupied with the quest for flowing water on Mars. However, in this image, we see one of many examples from Mars where lava (when it was molten) behaved in a similar fashion to liquid water.
More: https://uahirise.org/hipod/ESP_050406_1585
NASA/JPL-Caltech/UArizona
HiPOD: Jamming with the “Spiders” from Mars
But these aren’t actual spiders. We call it “araneiform terrain,” to describe the spider-like radiating channels that form when carbon dioxide ice below the surface heats up and releases. This is an active seasonal process we don’t see on Earth. Like dry ice on Earth, the carbon dioxide ice on Mars sublimates as it warms (changes from solid to gas) and the gas becomes trapped below the surface.
https://uahirise.org/hipod/ESP_055283_0985
NASA/JPL-Caltech/UArizona
HiRISE 10K: In Aram Chaos
The southern cap rock in Aram Chaos is situated in the Martian equatorial region, to the east of the Tharsis region.
Full cutout on Flickr -> https://flic.kr/p/2pVSDZS
HiRISE 3D: Inflated Lava Flows in the Southern Tharsis Region
This image was requested to look for inflated flows to compare with terrestrial analogs.
Full image: https://www.uahirise.org/anaglyph/ESP_083203_1585_ESP_083137_1585_RED
HiPOD: Amid Buttes or Yardangs in Martz Crater
Also visible in Context Camera data, what we see here is perhaps light-toned rock *or* smooth units with dust coating. Either way, by analogy to prior experience (e.g., Gale Crater), there is some possibility this is an exposure of ancient mudstone. Or not. The surrounding butte- or yardang-forming materials might also be sedimentary.
https://uahirise.org/hipod/ESP_075347_1445
NASA/JPL-Caltech/UArizona
#Mars #science #NASA
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