'Nature Astronomy' featured findings from the recent 'Astrobiology' paper, authored by Alternative Earths team members Chris Reinhard (GT), Stephanie Olson (UCR), Eddie Schwieterman (UCR) and Tim Lyons (UCR). The study showed that points in Earth's atmospheric history may have rendered a 'false negative,' that is, the lack of a detectable biosignature despite biological activity. Improving detection of planetary biosignatures will better prepare scientists for determining signs of life on exoplanets.

Astrobiology Paper 

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