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


Weekly Outage and Initial Catch Up
Every Tuesday morning (Pacific time) we begin a ten 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 Jan 2017, 16:11:24 UTC

Database slowness
We're having some as yet unexplained slowness with the our BOINC database. There don't seem to be any hardware issues. Temperatures are running normal and all the drives seem good. Yet for some reason the query that fills the "ready to send" queue is running about 10 times slower than it normally does.

Until I get it fixed, it means that on average we're sending out 3 workunits a second rather than 30+.

I'll let you know when I've got it figured out.
11 Nov 2017, 0:09:26 UTC · Discuss

SETI@home 2017 fundraising drive has begun.
We've started our annual fundraising drive to help raise the money we need to keep SETI@home running and expand it to new telescopes. Your computers provide us with the power to analyze this data, but your donations are an important part of keeping us operating.

If you haven't yet received your fundraising letter, you can preview it here. You can donate at https://setiathome.berkeley.edu/sah_donate.php.

Thanks for keeping SETI@home going!
3 Nov 2017, 17:29:31 UTC · Discuss

BSRC Student Travel Fundraiser
Berkeley SETI Research Center is holding a fundraiser to raise $7000 to send our student interns to conferences to present their work.

We’ve been working with some great students at Berkeley SETI, and we’re optimistic that some of them will become the scientists and engineers who lead the field in future and maybe even find the signal we’re searching for. In the meantime they have been doing amazing work and we’d like to send them to academic conferences to present their results, and for their own professional development. If you would like to help with this effort, we are running a crowdfunding campaign at https://crowdfund.berkeley.edu/SETItravel - every donation counts! We also have some fun perks including the chance to ask questions to members of the Berkeley SETI team, and to attend a party in our lab.

Although this does not directly benefit SETI@home (our annual fundraiser will start in a couple weeks), it's a worthy cause. I'll be contributing!
2 Oct 2017, 18:10:26 UTC · Discuss

Arecibo Status
I've been asked by several people to post a status update on the situation at Arecibo following hurricane Maria's passage.

Unfortunately, at this point we haven't gotten any news. The last information we have is from a couple hours prior to when the eye passed Arecibo. That report said all the employees were accounted for and in sheltered buildings.

Since then we've had no news. That's understandable. With power out on the whole island, electronics communications aren't going to be possible for some time. Heavy rains are still expected today, so I'm sure that the primary concern is still keeping everyone safe. Assessment of any damage will take time.

Let's hope that everyone is safe, that their homes are intact, and that any damage can be repaired quickly.
21 Sep 2017, 17:11:28 UTC · Discuss

Data from "Tabby's Star" is flowing.
For those who didn't recognize the name KIC8462852 in their work unit names, this data comes from GBT observations of Tabby's Star (aka Boyajian's Star, aka WTF-0001, aka the Weirdest star in the galaxy). This is not yet the full data set, which lives at Penn State, it's some test on-target/off-target observations that we're checking out.

You might also notice another change. We've doubled the size of our work units which will reduce our quantization noise by 34%, and, depending on the strength of other noise sources, could give us as much as double that as a sensitivity increase.
7 Sep 2017, 16:36:28 UTC · Discuss

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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.