SETI@home

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SETI (Search for Extraterrestrial Intelligence) is a scientific area whose goal is to detect intelligent life outside Earth. One approach, known as radio SETI, uses radio telescopes to listen for narrow-bandwidth radio signals from space. Such signals are not known to occur naturally, so a detection would provide evidence of extraterrestrial technology.

Radio telescope signals consist primarily of noise (from celestial sources and the receiver's electronics) and man-made signals such as TV stations, radar, and satellites. Modern radio SETI projects analyze the data digitally. More computing power enables searches to cover greater frequency ranges with more sensitivity. Radio SETI, therefore, has an insatiable appetite for computing power.

Sponsor: University of California, Sun Microsystems, Planetary Society, and others
Start Date: May 1999
Results: for publication

Contents
1 Videos 1.1 "Hello This is Earth", Nova scienceNOW 1.2 "Asking Big Questions about the Universe", Stephen Hawking 2 The Science of SETI@home	3 Results 4 Links of Interest 5 SETI@home in the Classroom

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Videos

"Hello This is Earth", Nova scienceNOW

"Asking Big Questions about the Universe", Stephen Hawking

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The Science of SETI@home

Previous radio SETI projects have used special-purpose supercomputers, located at the telescope, to do the bulk of the data analysis. In 1995, David Gedye proposed doing radio SETI using a virtual supercomputer composed of large numbers of Internet-connected computers, and he organized the SETI@home project to explore this idea. SETI@home was originally launched in May 1999.

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