Tag Archives: atmosphere

Curiosity: Mt. Sharp and instrument arm

Sol 1920, December 31, 2017. As part of a study of atmospheric phenomena, Curiosity has been imaging the terrain and sky above Mt. Sharp. Here the instrument arm has the drill pointing upward. Click the image to enlarge it. Sol … Continue reading

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MARCI weather report, December 11-17, 2017

Last week, a couple of small transient dust storms were spotted near the edge of the north polar cap, which had already reached its perennial configuration. Looking further south to the tropics, the aphelion cloud belt continued to be the … Continue reading

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Mars atmosphere well protected from solar wind

Despite the absence of a global Earth-like magnetic dipole, the Martian atmosphere is well protected from the effects of the solar wind on ion escape from the planet. New research shows this using measurements from the Swedish particle instrument ASPERA-3 … Continue reading

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MAVEN sheds light on habitability of distant planets

How long might a rocky, Mars-like planet be habitable if it were orbiting a red dwarf star? It’s a complex question but one that NASA’s Mars Atmosphere and Volatile Evolution mission can help answer. “The MAVEN mission tells us that … Continue reading

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MARCI weather report, December 4-10, 2017

Diffuse afternoon water-ice clouds continued to be the prominent feature over the tropics of Mars this past week. Among these latitudes, local-scale dust storms were observed over eastern Meridiani, southern Arabia, and northeast of Arsia Mons (the southernmost volcano of … Continue reading

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Clays quickly cooked in early Mars steambath

New research suggests that the bulk of clay minerals on Mars could have been formed as the planet’s crust cooled and solidified, not by later interactions with water on the surface as has long been assumed. (…) There are thousands … Continue reading

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MARCI weather report, Nov 27-Dec 3, 2017

During the past week on Mars, dust hazes and dust clouds were observed over northern Utopia, just west of the Olympia dune field. Looking to the low latitudes, the aphelion cloud belt proceeded to dominate the skies with condensate water-ice … Continue reading

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MARCI weather report, November 20-26, 2017

Northern Hemisphere Summer Solstice arrived last week on Mars. The northern polar ice cap had nearly reached its perennial (near minimum) configuration. Dust lifting off of the northern cap edge contributed to dust hazes over Acidalia and northern Utopia. The … Continue reading

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MARCI weather report, November 6-12, 2017

Dust-lifting near the north polar ice cap led to murky conditions over parts of Acidalia and northern Utopia. The dust that was pushed southward over Acidalia, formed a stationary dust cloud — likely the result of an eddy. Looking to … Continue reading

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MARCI weather report, Oct 30-Nov 5, 2017

Last week on Mars, a slight up-tick in dust-lifting occurred along the north polar ice cap edge. As storm activity northeast of Tempe pushed dust southward over the plains of Acidalia, a dust storm also swept over the sands of … Continue reading

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