Could we detect advanced civilizations by their industrial pollution? Probably not

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The hunt for aliens goes hand in hand with the hunt for habitable planets. Astronomers are on the hunt for exoplanets with atmospheric chemicals that could be a sign of an advanced civilization. These chemicals, known as technosignatures, are found on Earth and are the result of burning fossil fuels. A team of researchers has been exploring polycyclic aromatic hydrocarbons and whether they could detect them.
Source: phys.org
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