HomeAstronomyNASA's new telescope will be able to sniff out methane. Here's how...

NASA’s new telescope will be able to sniff out methane. Here’s how to tell if it’s a sign of life.

The first whiff that humans catch of life beyond Earth might be methane, but scientists will need to tread carefully before declaring a discovery based on the chemical.

If an exoplanet’s atmosphere contains methane, the chemical could be a sign of life — as long as planetary conditions meet certain criteria. Researchers from the University of California, Santa Cruz, have now established a framework for those conditions to guide scientists evaluating alien worlds.

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