Did We Receive a Message from a Planet Orbiting the Nearest Star?

Did We Receive a Message from a Planet Orbiting the Nearest Star?

This infrared star hosts an Earth-size planet, Proxima b, in its habitable zone, where liquid water could allow the chemistry of life on the planet’s surface. But even without examining the event details, one might wonder whether it is plausible for a radio signal to originate from our nearest star system. Following this argument, the quantitative paper with Amir shows that the chance of a radio signal appearing now from our nearest star is miniscule. There is one caveat to this conclusion, namely if intelligent life on Earth and its nearest star are correlated. Interestingly, Proxima Centauri became our nearest star around the same time when Homo sapiens appeared on Earth.

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