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The Wow! signal: did a telescope in Ohio receive an extraterrestrial communication in 1977?
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On 15 August 1977 the Big Ear radio telescope in the US was scanning the skies in a search for signs of intelligent extraterrestrial life. Suddenly, it detected a strong, narrow bandwidth signal that lasted a little longer than one minute – as expected if Big Ear’s field of vision swept across a steady source of radio waves. That source, however, had vanished 24 hours later when the Ohio-based telescope looked at the same patch of sky.
This was the sort of technosignature that searches for extraterrestrial intelligence (SETI) were seeking. Indeed, one scientist wrote the word “Wow!” next to the signal on a paper print-out of the Big Ear data.
Ever since, the origins of the Wow! signal have been debated – and now, a trio of scientists have an astrophysical explanation that does not involve intelligent extraterrestrials. One of them, Abel Méndez, is our guest in this episode of the Physics World Weekly podcast.
Méndez is an astrobiologist at the University of Puerto Rico at Arecibo and he explains how observations made at the Arecibo Telescope have contributed to the trio’s research.
- Abel Méndez, Kevin Ortiz Ceballos and Jorge I Zuluaga describe their research in a preprint on arXiv.
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Fetch error
Hmmm there seems to be a problem fetching this series right now. Last successful fetch was on September 12, 2024 15:17 ()
What now? This series will be checked again in the next day. If you believe it should be working, please verify the publisher's feed link below is valid and includes actual episode links. You can contact support to request the feed be immediately fetched.
Manage episode 436875812 series 2639991
On 15 August 1977 the Big Ear radio telescope in the US was scanning the skies in a search for signs of intelligent extraterrestrial life. Suddenly, it detected a strong, narrow bandwidth signal that lasted a little longer than one minute – as expected if Big Ear’s field of vision swept across a steady source of radio waves. That source, however, had vanished 24 hours later when the Ohio-based telescope looked at the same patch of sky.
This was the sort of technosignature that searches for extraterrestrial intelligence (SETI) were seeking. Indeed, one scientist wrote the word “Wow!” next to the signal on a paper print-out of the Big Ear data.
Ever since, the origins of the Wow! signal have been debated – and now, a trio of scientists have an astrophysical explanation that does not involve intelligent extraterrestrials. One of them, Abel Méndez, is our guest in this episode of the Physics World Weekly podcast.
Méndez is an astrobiologist at the University of Puerto Rico at Arecibo and he explains how observations made at the Arecibo Telescope have contributed to the trio’s research.
- Abel Méndez, Kevin Ortiz Ceballos and Jorge I Zuluaga describe their research in a preprint on arXiv.
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