The search for extraterrestrial intelligence (SETI) is a multidisciplinary research area focused on detecting evidence of technologically advanced civilizations beyond Earth, primarily through their electromagnetic emissions or technosignatures. It integrates radio astronomy, signal processing, astrophysics, planetary science, and increasingly machine learning to monitor and analyze vast bandwidths of the sky for narrowband, pulsed, or otherwise non-natural signals. Research addresses detection algorithms, interference mitigation, instrument calibration, and statistical frameworks for evaluating candidate signals. Modern SETI also explores non-radio channels, including optical or infrared beacons and other engineered signatures, and develops quantitative strategies for survey design, target selection, and constraints on the prevalence of technological life.
Radio astronomy took another step forward recently, with the completion of Phase III of the Murchison Widefield Array (MWA) in Western Australia. We've reported before on how the MWA has investigated everything from SETI ...
Astronomy
Sep 8, 2025
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The recent discovery of the third known interstellar object (ISO), 3I/ATLAS, has brought about another round of debate on whether these objects could potentially be technological in origin. Everything from random YouTube ...
Astrobiology
Sep 1, 2025
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The "Wow!" signal has been etched with a red marker in the memory of advocates for the search for extraterrestrial intelligence (SETI) since its unveiling in 1977. To this day, it remains one of the most enigmatic radio frequency ...
Astronomy
Aug 25, 2025
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If an extraterrestrial intelligence were looking for signs of human communications, when and where should they look? In a new study, researchers at Penn State and NASA's Jet Propulsion Laboratory in Southern California analyzed ...
Astronomy
Aug 21, 2025
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Astrobiology poses fundamental questions about life in the universe: How did it emerge? Is there life beyond Earth? In a recently published study in PLOS One, researchers from Leiden University investigated how the field ...
Astrobiology
Aug 14, 2025
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For decades, astronomers have searched for signs of extraterrestrial intelligence using radio telescopes and optical instruments, scanning the skies for artificial signals. Now, researchers are taking a different approach, ...
Astronomy
Aug 13, 2025
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Just imagine it, the news stories are all over your phone when you wake! The day will surely come that we will discover that we are not alone in the universe! What happens the day after though? A new research paper posted ...
Astronomy
Jul 23, 2025
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On July 1, astronomers spotted an unusual high-speed object zooming towards the sun. Dubbed 3I/ATLAS, the surprising space traveler had one very special quality: its orbit showed it had come from outside our solar system.
Astronomy
Jul 23, 2025
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Radar systems used by civilian airports and military operations are inadvertently revealing our existence to potential advanced alien civilizations, new research shows.
Astronomy
Jul 8, 2025
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What new methods can be developed in the search for extraterrestrial intelligence (SETI)? This is what a recent white paper submitted to the 2025 NASA Decadal Astrobiology Research and Exploration Strategy (DARES) Request ...
Astronomy
Jul 7, 2025
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