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Tag Archives: early Mars
Weathering on early Mars bad for forming carbonates
[Editor’s note: From a paper by Fabien Baron and three co-authors recently published in the Journal of Geophysical Research.] New Constraints on Early Mars Weathering Conditions From an Experimental Approach on Crust Simulants • Chemical weathering in mildly acidic conditions … Continue reading
Mars: not as dry as it seems
When searching for life, scientists first look for an element key to sustaining it: fresh water. Although today’s Martian surface is barren, frozen and inhabitable, a trail of evidence points to a once warmer, wetter planet, where water flowed freely. … Continue reading
Did bursts of methane warm early Mars?
The presence of water on ancient Mars is a paradox. There’s plenty of geographical evidence that rivers periodically flowed across the planet’s surface. Yet in the time period when these waters are supposed to have run — three to four … Continue reading
Ancient Mars was icy and cold
The high seas of Mars may never have existed. According to a new study that looks at two opposite climate scenarios of early Mars, a cold and icy planet billions of years ago better explains water drainage and erosion features … Continue reading
‘Early Mars’ topical website launched
The Lunar and Planetary Insitute in Houston has launched a new website on the subject of early Mars. It will provide links to new papers, conference programs and abstracts, field-trip guides, and more. The site’s introduction states, “The influx of … Continue reading
Was nitrogen in the early Mars atmosphere a key to ancient habitability?
Scientists have long suspected that ancient Mars had a thicker atmosphere and temperatures warmer and far more habitable than at present. But modelers have difficulties making the numbers come out right,
Posted in Reports
Tagged atmosphere, carbon dioxide, climate, climate change, CO2, early Mars, habitability, N2, nitrogen, water, water vapor
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Mars’ explosive childhood
Mars is widely understood to be a volcanic planet — its surface shows abundant evidence of volcanic activity, both ancient and more recent. Spacecraft detect lava flows in many locations, and spectroscopic evidence of volcanic rocks lies almost everywhere. The … Continue reading
Posted in Reports
Tagged climate, Coprates Chasma, early Mars, magnetic field, Mars Odyssey, THEMIS, thermal inertia, Valles Marineris, volcanism, volcanos
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