Monthly Archives: June 2012

“Blueberries” could date when Meridiani rocks were last wet

The relative amount of three chemical elements contained in Martian “blueberries” might offer scientists a way to date when these spherules were last inundated with water, according to recent research. Rich in the iron mineral hematite, blueberries are small concretions, … Continue reading

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Changing times in Syrtis Major

Early Mars appears to have been highly unlike today, being warmer and wetter. To find out why and how the environment changed, scientists look for inflection points in Martian history, where one geological regime gives way to another. A report … Continue reading

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UV light makes methane from meteorites

Methane gas, which can arise from both biological and geological sources, was detected in the Martian atmosphere by observations from Earth-based telescopes in 2003 and from the Mars Express orbiter (2004). As methane breaks down relatively quickly under Martian conditions, … Continue reading

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Gale Crater’s mound: part of the Medusae Fossae Formation?

The Medusae Fossae Formation (MFF) is a thick deposit of soft materials that erodes easily by wind. The formation spreads in several large patches between the volcanic provinces of Elysium and Tharsis. In addition, outliers extend farther afield, with some … Continue reading

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