NASA's Curiosity rover discovered siderite (iron carbonate) on Mars, showing the planet once had a carbon cycle. It formed in watery conditions, trapping CO₂. Some later broke down, releasing CO₂ back—proving Mars' carbon cycle was active but unbalanced. Similar deposits may exist worldwide. 🌌🔍🌍💧
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#MarsDiscovery #CuriosityRover #CarbonCycle #Siderite #SpaceExploration
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#MarsDiscovery #CuriosityRover #CarbonCycle #Siderite #SpaceExploration
Science
Carbonates identified by the Curiosity rover indicate a carbon cycle operated on ancient Mars
Ancient Mars had surface liquid water and a dense carbon dioxide (CO2)–rich atmosphere. Such an atmosphere would interact with crustal rocks, potentially leaving a mineralogical record of its presence. We analyzed the composition of an 89-meter ...
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