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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I started in Physics at MIT, but graduated in Electrical Engineering and went on to work in Telecom (for 20+ years now). I co-founded Natural...


Weekly Outage and Initial Catch Up
Every Tuesday morning (Pacific time) we begin a five hour data distribution outage for database and systems maintenance. The upload/download servers will be offline during this time. Afterwards you may experience connectivity issues for several more hours as the servers catch up with demand.
24 Apr 2019, 19:27:55 UTC

Article on SETI@home's 20th anniversary
An article by Ben Lindbergh in The Ringer discusses the history and status of SETI@home as it turns 20.
25 May 2019, 13:45:15 UTC · Discuss

20 years and counting!
Happy Anniversary! On this date in 1999, SETI@home came online. Since then millions of our volunteers have helped us sift through petabytes of data from multiple radio telescopes. ET still hasn't shown up to the party.

We're not discouraged. We're able to examine less than a tenth of a percent of the radio spectrum, over only 1/3 of the sky and a limited number of additional stars. But our capabilities are increasing every day. In 1999 it took up to a week to process a single workunit on a home PC. Now, on a machine with a GPU, it might only take a few minutes to do a far more detailed and more sensitive analysis. Who knows what the next 20 years will bring?
17 May 2019, 17:39:43 UTC · Discuss

SETI Perspectives article "Coming of Age for Optical SETI"
Richard Lawn has written a new article, this one on the Panoramic Optical SETI effort, PANOSETI. As a bonus he includes a bit of an update on 'Oumuamua.
10 May 2019, 18:52:19 UTC · Discuss

Science progress report
An update on the SETI@home back-end data analysis is here.
30 Apr 2019, 22:05:21 UTC · Discuss

Long Outage Today
We had to recover the master database on oscar from a backup taken today on carolyn. Oscar is now back to being the master DB and carolyn is once again the replica DB. Things will be a bit slow as the database becomes resident in memory.
10 Apr 2019, 0:57:56 UTC · Discuss

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©2019 University of California
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.