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 zed
Hello, Im a 29 old guy from North of Norway (Bodø) At the moment Im a student, Studying to be a nurse, but Have done several things in the past.. A...


We've started our annual year-end fundraising email
If you didn't get one (possibly due to spam blocking), you can read the same letter on-line here. Thank you!!!
26 Nov 2019, 22:01:34 UTC

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.
26 Nov 2019, 22:01:34 UTC

New paper on observing "Clarke Exo-belts"
Dr. Korpela and his colleagues Prof. Shauna Sallmen and Ms. Kaisa Crawford-Taylor have published a new paper today in the Astronomical Journal about whether astronomers be able to detect belts of satellites circling planets around other stars. Unfortunately, the answer is that even the thickest satellite belts will be very difficult to see with current technology. Even the James Webb Space Telescope will find it difficult.

If, like most sentient beings in the Galaxy, you don't have a subscription to the Astronomical Journal you can see a preprint of the article at arXiv.org.
4 Dec 2019, 19:44:43 UTC · Discuss

Fall/Winter 2019 Funding drive has started
We've started our 2019 funding drive. Many of you have probably received our email penned by Jeff Cobb who has been in the SETI group longer than I have. If you can't wait, you can read yours here.

Because of our continued effort to be GDPR compliant, we're not sending emails to anyone with an EU/EAA email addresses, anyone who listed an EU/EAA country, or anyone who listed "International" as their country. And, of course, anyone who has opted out of our emails won't get them.

Thanks for your support!
28 Nov 2019, 22:00:33 UTC · Discuss

New SETI Perspectives: "Is ET in Our Solar System?"
Richard Lawn has posted a new SETI Perspectives entitled "Is ET in Our Solar System?"
27 Nov 2019, 4:43:58 UTC · Discuss

New Nebula progress report
Check out All in the Timing, a report on recent progress in SETI@home's back-end data analysis.
4 Nov 2019, 21:55:27 UTC · Discuss

SETI@home news for Alexa
SETI@home member Morris Penasso has developed a SETI@home News "skill" for Amazon Alexa/Echo that can tell you the latest from our news feed.
You can get it here.
18 Oct 2019, 16:57:08 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.