A team of researchers at MIT has found that phosphine, which is among the stinkiest, most toxic gases on Earth, cannot be produced in any other way except by anaerobic organisms, making it a pure ‘biosignature gas.’ Artist’s conception of what life could look like on the surface of an exoplanet. Image credit: NASA. Life makes use of thousands of volatile compounds that could contribute toward a biosphere. Some of these compounds may accumulate...
