Posted on by Carolyn Collins Petersen

If Astronomers See These Chemicals in a Planet’s Atmosphere, There’s Likely an Advanced Civilization There

Artist rendition of a potential water-world exoplanet that might support advanced civilizations. Such life could advertise its existence via technosignatures from industrial or other activities. (Credit: ESA / Hubble / M. Kornmesser)
Artist rendition of a potential water-world exoplanet that might support advanced civilizations. Such life could advertise its existence via technosignatures from industrial or other activities. (Credit: ESA / Hubble / M. Kornmesser)

In an age of ever-growing numbers of exoplanets circling other stars, it’s natural that astronomers search for signatures of advanced civilizations. Such signatures may have biological or technological origins.

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