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.
What do you think of when it comes to extraterrestrial life? Most popular sci-fi books and TV shows suggest humanoid beings could live on other planets. But when astronomers are searching for extraterrestrial life, it is ...
Astronomy
Apr 17, 2025
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Astronomers raised hopes that humanity might not be alone in the universe by announcing on Thursday they have detected the most promising hints yet of life on a distant planet.
Astrobiology
Apr 17, 2025
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Are we alone in the universe? The answer to one of humanity's biggest questions is complicated by a basic reality: If there is life on other worlds, it may not look familiar. A sample of rocks from Mars or another planet ...
Astrobiology
Apr 10, 2025
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In 2021, the Office of the Director of National Intelligence (ODNI) released a report detailing recently-declassified information on unidentified aerial phenomena (UAP). Since then, the Department of Defense has released ...
Astrobiology
Apr 9, 2025
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What if humanity's search for life on other planets returns no hits? A team of researchers led by Dr. Daniel Angerhausen, a Physicist in Professor Sascha Quanz's Exoplanets and Habitability Group at ETH Zurich and a SETI ...
Astrobiology
Apr 7, 2025
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What drives us to send probes throughout the solar system and rovers and landers to Mars? It's not cheap, and it's not easy. It's because we live inside a big, natural puzzle, and we want to understand it. That's one reason. ...
Astrobiology
Mar 28, 2025
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A new study has provided precise atomic data that shed light on the impact of charged ions from coronal mass ejections (CMEs). Published in The Astrophysical Journal Supplement Series on March 18, the study was led by researchers ...
Astronomy
Mar 27, 2025
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Scientists have identified a promising new way to detect life on faraway planets, hinging on worlds that look nothing like Earth and gases rarely considered in the search for extraterrestrials.
Astrobiology
Mar 13, 2025
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Let's dive into one of those cosmic curiosities that's bound to blow your mind: how we might chat with aliens. And no, I'm not talking about elaborate coded messages or flashy signals. We're talking about something incredibly ...
Astronomy
Feb 24, 2025
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A popular model of evolution concludes that it was incredibly unlikely for humanity to evolve on Earth, and that extraterrestrial intelligence is vanishingly rare.
Astrobiology
Feb 17, 2025
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