SETI@home is in hiberation.

We are no longer distributing tasks. The SETI@home message boards will continue to operate, and we'll continue working on the back-end data analysis. Maybe we'll even find ET!

Thanks to everyone for your support over the years. We encourage you to keep crunching for science.

What is SETI@home?

SETI@home is a scientific experiment, based at UC Berkeley, that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data.

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User of the Day

User profile Profile Eric Pezoa
Born in Chile, raised in Argentina, I currently live in Arizona, USA I work as an IT member of a large corporation, I’m not into astronomy, but...

News

YouTube video on SETI@home
Anton Petrov made a nice video about SETI@home and the recent papers.
1 Feb 2026, 0:24:32 UTC · Discuss

UPI story on SETI@home
Check out a story by United Press International about SETI@home.
30 Jan 2026, 21:53:54 UTC · Discuss

SETI@home on SETI LIVE 01/22/2026
SETI@home Director Eric Korpela will be discussing the recent SETI@home results papers on the SETI Institute's SETI Live Podcast at 2:30 PM PST (5:30 PM EST, 2230 UTC).
22 Jan 2026, 20:50:18 UTC · Discuss

SETI@home papers accepted for publication

Two papers on SETI@home will be published in The Astronomical Journal, a well-regarded scientific journal:

  • SETI@home: Data Acquisition and Front-End Processing describes SETI@home's data recorder, splitter, and client program. It covers the five detection types, their parameters and statistics, and the algorithm for finding them.

  • SETI@home: Data Analysis and Findings describes the back end (Nebula) and its results: RFI removal, candidate finding and ranking. It explains how artificial signals, or 'birdies', were used to optimize algorithms and estimate overall sensitivity.

    For details, see an entry in the Nebula blog.

    • 18 Jun 2025, 3:23:30 UTC · Discuss

    Website outage
    Multiple disk failure resulted in a web site outage. We think we've recovered almost everything from the web site, so it should be back up and running.
    3 Apr 2025, 20:49:48 UTC · Discuss

    ... more

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    SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.