If intelligent aliens are searching for other advanced lifeforms in the galaxy, our cell phone towers could be the beacons that give Earthlings away.
New research suggests that advanced aliens in nearby star systems could probably already detect radio signals from cell phone towers. And as these signals become more powerful, humanity’s calling card will become increasingly detectable across the galaxy.
“The Earth is already anomalously bright in the radio part of the spectrum; if the trend continues, we could become readily detectable by any advanced civilization with the right technology,” Mike Garrett, the director of Jodrell Bank Centre for Astrophysics at The University of Manchester, said in a statement.
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