Exoplanet hunters should check for nitrous oxide — a possible biosignature. Something is missing from the typical roster of chemicals that astrobiologists use to search for life on planets around other stars, according to scientists at the University of California, Riverside (UCR). Namely, laughing
of rocky planets, you could potentially detect nitrous oxide at levels comparable to CO2 or methane,” Schwieterman said.
“However, under the right conditions in the ocean, certain bacteria can convert those nitrates into NNitrous oxide is a constituent of Earth’s atmosphere that provides evidence of life. This image is a view of Earth from the moon that was captured by NASA’s Lunar Reconnaissance Orbiter . Credit: NASA/Goddard/Arizona State University
“This conclusion doesn’t account for periods in Earth’s history where ocean conditions would have allowed for much greater biological release of NThe James Webb Space Telescope could soon send information about the atmospheres of planets in the TRAPPIST-1 system. Credit: Northrup Grumman
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