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Signatures of alien technology could be how humanity first finds extraterrestrial life

  • Written by Macy Huston, PhD Candidate in Astronomy and Astrophysics, Penn State
Signatures of alien technology could be how humanity first finds extraterrestrial lifeAstronomers have been looking for radio waves sent by a distant civilization for more than 60 years.Rytis Bernotas/iStock via Getty Images

If an alien were to look at Earth, many human technologies – from cell towers to fluorescent light bulbs – could be a beacon signifying the presence of life.

We are two astronomerswho work on the sear...

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