THEMIS: False color scan across Terra Sirenum

Scan across Terra Sirenum (THEMIS_IOTD_20170526)THEMIS Image of the Day, May 26, 2017. Today’s false color image shows part of the plains and craters of Terra Sirenum. This long scan (see full size image at link) was taken not long after local sunrise.

The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of the surface not easily identified in a single band image.

More THEMIS Images of the Day by geological topic.

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HiRISE: Flow on the rim of Tooting Crater

ESP_016412_2030This oblique view shows a small part of the near-rim ejecta from Tooting Crater. The flow extending from upper left to lower right looks much like a typical lava flow, but doesn’t emanate from a volcanic vent.

Instead, this must be either melted rock from the impact event, or a wet debris flow from melting of ice. The surface is dusty so color variations are minor. [More at link]

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Curiosity: Approaching the ridge; ragged weathering

1705-mastcam-341705-mastcam100Sol 1705, May 24, 2017. The Mastcam’s 34mm lens took a five-frame pan showing part of Vera Rubin Ridge. At right, massive weathering over untold numbers of years has reduced these Murray Formation rock layers and veins to ragged shreds; Mastcam 100mm composite (6 MB). Click either image to enlarge it.

Sol 1705 raw images (from all cameras), and Curiosity’s latest location.

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HiRISE: Rim of Verlaine Crater

tumblr_oq1y22LfuW1rlz4gso1_1280The rim of Verlaine Crater. This entire scene is actually along the rim of the crater, which is much, much larger than what HiRISE can capture in one image.

Beautiful Mars series.

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THEMIS: False colors on Terra Sirenum plains

Terra Sirenum plains and craters (THEMIS_IOTD_20170525)THEMIS Image of the Day, May 25, 2017. Today’s false color image shows part of the plains and craters in Terra Sirenum.

The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of the surface not easily identified in a single band image.

More THEMIS Images of the Day by geological topic.

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Curiosity update: when Mars gives you lemons, calibrate your instruments

NLB_548858612EDR_F0631636NCAM00277M_-br2Sol 1707-08, May 25, 2017, update by MSL scientist Michael Battalio: After a 14.6 m drive, the GEO group decided against arm activities due to a lack of compelling targets and in deference to making the next drive longer. Thusly, GEO science activities relied on Mastcam and ChemCam. On Sol 1707, ChemCam will capture a raster of the “White Cap Mountain” bedrock target (the white bedrock left of center in the bottom quarter of the above Navcam image), as well as a patch of dark undisturbed soil called “French Hill Pond.” Mastcam will document all of the ChemCam targets and will image “Googings Ledge” (the large, darker bedrock just above and right of image center) and “The Twinnies” (the shadowed bedrock exposure cut off on the far left), which are sedimentary members of the Murray formation, and… [More at link]

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HiRISE: Oblique view of uplifted rocks

ESP_021545_1660This image shows part of the central uplifted region of an impact crater more than 50 kilometers wide. That means that the bedrock has been raised from a depth of about 5 kilometers, exposing ancient materials.

The warm (yellowish-reddish) colors mark the presence of minerals altered by water, whereas the bluish and greenish rocks have escaped alteration. Sharp-crested ridges and smooth areas are young windblown materials. [More at link]

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MARCI weather report, May 15-21, 2017

May-17-2017For the past week on Mars, arcuate-shaped dust storms and water-ice clouds continued to propagate eastward along the northern seasonal ice cap edge. A few transient dust storms were spotted over Utopia Planitia associated with polar activity. Looking to the southern highlands, local-scale dust storms repeatedly swept over southern Aonia and south of Argyre, sending dust hazes east, past Promethei. Diffuse water-ice clouds…  [More at link, including video]

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Curiosity: Onward through the speedbumps

1705-navcamCuriosity_Location_Sol1705Sol 1705, May 24, 2017. Navcam shows the way through a field of rounded sedimentary rocks like eroded speedbumps. At right, the arrow points to Curiosity’s position on the approach to Vera Rubin Ridge (bottom). Click images to enlarge them.

Sol 1705 raw images (from all cameras), and Curiosity’s latest location.

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Schiaparelli crash investigation finishes

ESA ExoMars 2016The inquiry into the crash-landing of the ExoMars Schiaparelli module has concluded that conflicting information in the onboard computer caused the descent sequence to end prematurely.

The Schiaparelli entry, descent and landing demonstrator module separated from its mothership, the Trace Gas Orbiter, as planned on 16 October last year, and coasted towards Mars for three days.

Much of the six-minute descent on 19 October went as expected: the module entered the atmosphere correctly, with the heatshield protecting it at supersonic speeds. Sensors on the front and back shields collected useful scientific and engineering data on the atmosphere and heatshield. (…)

The report summary can be downloaded here.  [More at links]

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