Tag Archives: Mars Reconnaissance Orbiter

MARCI weather report, May 21-27, 2018

Shortly after the arrival of the Northern Autumnal Equinox last week, two large arcuate-shaped dust storm fronts swept eastward from Acidalia to Deuteronilus and further eastward towards the plains of Utopia. Looking to the southern highlands, dust lifting activity was … Continue reading

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HiRISE: Patches of snow

The North Pole of Mars is surrounded by a vast sea of sand dunes. In this dune field, the dunes are covered by a seasonal cap of dry ice in the winter. In early Martian summer, at the time we … Continue reading

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HiRISE: A new impact crater

MRO keeps finding new impact sites on Mars. This one occurred within the dense secondary crater field of Corinto Crater, to the north-northeast. The new crater and its ejecta have distinctive color patterns. Once the colors have faded in a … Continue reading

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HiRISE: Pits galore near Kasei Valles

Pits galore near Kasei Valles. These are located near the edge of a lava outflow region, for which there is evidence of subsurface tube flows. Beautiful Mars series. [More at links]

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HiRISE: Stair-stepped hill in central Arabia Terra

Stair-stepped hill in central Arabia Terra. Stratified material eroded so as to look something like a wedding cake. A cliff-bench slope expression, apparently mantled with dust, each layer is roughly the same thickness as the next. Beautiful Mars series. [More … Continue reading

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HiRISE: Of sand, rock, and dust

Of sand, rock, and dust. There is some wonderful stratigraphy on display here in Meridiani Planum. Beautiful Mars series. [More at links]

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MARCI weather report, May 14-20, 2018

Last week on Mars, weather patterns were fairly typical for this time of martian year. A large dust storm was observed over Cimmeria and Sirenum at the beginning of the week. In the following sols, the dust lifting quickly abated … Continue reading

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HiRISE: Alluvial fan in Murray Crater

Alluvial fan in Murray Crater. Alluvial fans are among the strongest lines of evidence that liquid water once flowed on the surface of Mars. Beautiful Mars series. [More at links]

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HiRISE: Inverted channels

Inverted channels at the boundary of highlands and intercrater plains. This image targets inverted channels located at the boundary between Noachian highlands and Noachian intercrater plains bedrock. These channels are 200 to 500 meters wide, implying substantial fluvial activity. High-resolution … Continue reading

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HiRISE: North polar layered deposits

North polar layered deposits. Beautiful Mars series. [More at links]

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