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Contact: Heather Dewar
University of Maryland

Martian Meteorite Reveals Ancient Atmospheric Chemistry

Caption: A microscope reveals colorful augite crystals in this 1.3 billion year old Martian meteorite, MIL 03346. To help reconstruct Mars' ancient atmosphere, researchers analyzed sulfur isotopic ratios in 40 martian meteorites.

Credit: James Day

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Related news release: Meteorites yield clues to red planet's early atmosphere

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