Archival ALMA Reanalysis Expands SETI into Millimeter- and Submillimeter-Band Searches and Highlights Stellar Bycatch

To the point

Louisa Mason shows that applying a galactic model to archived ALMA millimeter data reveals many more stars were surveyed than previously thought, so archival data can guide future SETI searches without new telescope time, even though no technosignatures were found.

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Astronomers Just Opened a New Frontier in the Search for Alien Civilizations Using Archived Telescope Data
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Astronomers Just Opened a New Frontier in the Search for Alien Civilizations Using Archived Telescope Data

Scientists revisited archived telescope data and found that SETI may have already surveyed millions more stars than previously believed.