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3 MARCH 2021 For now life is flourishing on our oxygen-rich planet, but Earth wasn t always that way – and scientists have predicted that, in the future, the atmosphere will revert back to one that s rich in methane and low in oxygen.   This probably won t happen for another billion years or so. But when the change comes, it s going to happen fairly rapidly, the study suggests. This shift will take the planet back to something like the state it was in before what s known as the Great Oxidation Event (GOE) around 2.4 billion years ago. What s more, the researchers behind the new study say that atmospheric oxygen is unlikely to be a permanent feature of habitable worlds in general, which has implications for our efforts to detect signs of life further out in the Universe.

Chris reinhardKazumi ozakiGeorgia institute of technologyToho universityGreat oxidation eventArchaean earthGeorgia instituteExoplanet system scienceAmp quotகிறிஸ் ரீன்ஹார்ட்கஜுமீ ஒஜாக்கிஜார்ஜியா நிறுவனம் ஆஃப் தொழில்நுட்பம்தோஹோ பல்கலைக்கழகம்நன்று ஆக்ஸைடேஶந் நிகழ்வுஜார்ஜியா நிறுவனம்