Tag Archives: atmosphere

MAVEN: Loss of atmosphere drove climate change on Mars

MAVEN research shows that atmospheric loss to space has been the major process driving climate change on Mars. Research using MAVEN data indicates that Mars’ atmospheric loss over time has been at least 0.8 bar CO₂ or the equivalent of … Continue reading

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MARCI weather report, July 23-29, 2018

During the past week, dust continued to gradually settle out of the martian atmosphere as part of the long decay phase of the planet-encircling dust event. Regional surface albedo features, such as Noachis, Syrtis, Cimmeria, and Sirenum became more prominent. … Continue reading

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Mars hasn’t enough CO2 for terraforming

A new study of the quantity of carbon dioxide on Mars has compiled a planet-wide inventory of the CO2 it holds in all its accessible reservoirs: atmosphere, ice, and locked up in surface carbonate rocks and other potential sources. The … Continue reading

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HST images dusty Mars (and Phobos and Deimos) at opposition

With both Saturn and Mars coming to opposition — lying directly opposite the Sun in the sky — this summer, scientists used the Hubble Space Telescope to image both planets. But unlike the previous opposition, Mars is experiencing a planet-wide … Continue reading

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MARCI weather report, July 16-22, 2018

Dust clouds and hazes still loomed over Mars last week. Some atmospheric clearing was spotted over Noachis and Aonia Terra as the planet-encircling dust event transitioned to a decay phase. The edges of the canyons that make up Valles Marineris … Continue reading

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MAVEN: ‘Stolen’ electrons cause unusual Mars aurora

Auroras appear on Earth as ghostly displays of colorful light in the night sky, usually near the poles. Our rocky neighbor Mars has auroras too, and NASA’s MAVEN spacecraft just found a new type of Martian aurora that occurs over … Continue reading

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Mars ‘storm chasers’ seek dusty secrets

Storm chasing takes luck and patience on Earth — and even more so on Mars. For scientists watching the Red Planet from data gathered by NASA’s orbiters, the past month has been a windfall. “Global” dust storms, where a runaway … Continue reading

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MAVEN: Webinar July 25 on restoring the martian atmosphere

Many people have suggested that future Mars colonists may want to thicken the Martian atmosphere and make it breathable for long-term habitation of the Red Planet. Join MAVEN Co-Investigator Dr. Robert Lillis of the UC Berkeley Space Sciences Laboratory to … Continue reading

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Radar shows Mars atmosphere behaves as a single system

New research using a decade of data from ESA’s Mars Express has found clear signs of the complex martian atmosphere acting as a single, interconnected system, with processes occurring at low and mid levels significantly affecting those seen higher up. … Continue reading

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MARCI weather report, July 9-15, 2018

Dusty conditions across Mars as the planet-encircling dust event dragged on for another week. Local-scale dust lifting was spotted over Solis-Sinai and along the developing north polar hood. Each afternoon, water-ice gravity wave (a.k.a. lee wave) clouds trailed from the … Continue reading

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