662202 external_news 1666018518 1666018518 Don’t laugh off the potential value in finding nitrous oxide (N2O) in space atmospheres—scientists say the laughing gas could be a key biosignature in the search for life beyond our own planet. In a paper published earlier this month in The Astrophysical Journal, researchers say we’ve focused plenty on oxygen and methane as biosignatures, but skipping out on nitrous oxide “may be a mistake.” Researchers used simulations to show that with different stars from the sun we know and love, the biosignature search could well include N2O. One of those researchers is Chris Reinhard, associate professor in the School of Earth and Atmospheric Sciences. 

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