US EditionUC Berkeley scientists focus on 100 radio signals in search of extraterrestrial life
UC Berkeley team identified 100 top candidate signals from 12 billion analyzed by SETI@home; China’s FAST telescope began follow-up observations in July 2025.
- Astronomers are now using the Five‑hundred‑meter Aperture Spherical Telescope in China to reobserve the 100 candidate signals identified by UC Berkeley scientists.
- After two decades of work, the project produced a dataset from the Arecibo radio telescope in Puerto Rico that SETI@home, launched in 1999, analyzed using 2 million volunteer computers.
- Using specialized RFI-filtering algorithms developed in 2016, the team reduced 12 billion signals at the Max Planck Institute for Gravitational Physics supercomputer to 1,000 manually inspected candidates.
- So far, follow‑up with FAST returned no repeats as it observed half of the 100 candidate sources, while the team warns many are likely RFI; results appeared in two 2025 papers in The Astronomical Journal.
- Looking beyond immediate follow-up, researchers suggest future reanalysis with modern methods and `reanalysis possibilities`, considering the sensitivity of UC Berkeley's SETI@home and FAST observations, said Korpela.
12 Articles
12 Articles
Network of Home Computers Detected 100 Potential Alien Signals
For over two decades, millions of people volunteered the computational capacity of their computers to help UC Berkeley scientists in their search for extraterrestrial intelligence (SETI). The goal of the project, called SETI@home, was to trawl through data collected by the Arecibo Observatory in Puerto Rico for signs of unusual radio signals from the cosmos. It was a powerful example of “distributed computing,” which relies on a huge network of …
The civil science project SETI@home helped search for radio signals from the Milky Way for suspicious energy flashes for 21 years.
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Local News MattersUC Berkeley scientists focus on 100 radio signals in search of extraterrestrial life
A team of UC Berkeley scientists has painstakingly analyzed billions of radio signals received over fifteen years and have zeroed in on 100 that are most likely to be sent by extraterrestrial intelligence.
Scientists from the SETI@home project, linked to the University of California in Berkeley, identified 100 radio signals coming from space that will now be more closely analyzed. The signals were among billions of records collected over more than two decades of observations. SETI@home used computers of volunteers from several countries to process data captured by radiotelescopes, mainly the old observatory of Arecibo, in Puerto Rico. Throughout t…
UCLA SETI - The UCLA Search for Technosignatures Around Sun-like Stars
The search for life in the universe represents one of the most important scientific questions of our time. The question can be approached by searching for evidence of biological processes (biosignatures) or extraterrestrial technology (technosignatures). The mission of UCLA SETI is to find evidence of other civilizations in the universe and extract information encoded in […] Source
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