Tag Archives: Mars Reconnaissance Orbiter

MARCI weather report, May 27-June 2, 2019

There was a slight uptick in dust activity this past week on Mars. The week began with a couple of arcuate-shaped dust storms extending over the retreating seasonal north polar ice cap in Acidalia and Arcadia. Looking to the southern … Continue reading

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HiRISE: A song of dune and ice

A song of dune and ice. This image shows rare dunes superposed on elements of the polar cap near Olympia Undae, which is a vast dune field in the north polar region of Mars. HiRISE Picture of the Day archive. … Continue reading

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HiRISE: Valleys in a crater north of Sacra Sulci

Valleys in a crater to the north of Sacra Sulci. Small valleys similar to these have been dated to the Hesperian and Amazonian epochs in other areas of Mars, making them some of the youngest features formed by the flow … Continue reading

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HiRISE: Dipping layers

Dipping layers. These aren’t dipping dots. The objective of this observation is to examine several sets of dipping layers in a depression in Ismeniae Fossae, which straddles the southern highlands/northern lowlands of Mars. HiRISE Picture of the Day archive. [More … Continue reading

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HiRISE: Still life with an impact crater

Still life with an impact crater. Ice fill within a crater in the north polar layered deposits (NPLD) may be a site where accumulation could be observed, helping to settle a long-term problem in Mars polar science: are the NPLD … Continue reading

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HiRISE: An interesting layered deposit

An interesting layered deposit. The objective of this observation is to examine layers in an impact crater, located in Galaxias Fossae. Pictures like this will help us put together a geological history of the region. Note the indentation on the … Continue reading

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MARCI weather report, May 20-26, 2019

Last week on Mars, water ice clouds and small dust-lifting events continued to be observed along the retreating seasonal north polar ice cap edge. Near the end of the week, larger pulses of dust activity were spotted over the plains … Continue reading

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HiRISE: The floor of a crater in the Phlegra region

The floor of a crater in the Phlegra region. The objective of this observation is to examine this crater floor that not only cracks in it, but also what looks like lava piled up in one area. HiRISE Picture of … Continue reading

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HiRISE: Hephaestus Fossae pits

Hephaestus Fossae pits. The Hephaestus Fossae are a system of troughs and channels that are about 604 kilometers in length. The fossae have been tentatively identified as outflow channels, but their origin and evolution remain ambiguous. HiRISE Picture of the … Continue reading

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HiRISE: Slope monitoring

Slope monitoring. The recurring slope lineae (RSL) in this image are large and have high contrast. Most importantly, we see multiple examples of RSL flowing on bedrock, alternating between bedrock and regolith and bedrock and regolith, and regolith only. Do … Continue reading

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