SETI@home is a scientific experiment that will harness the power
of hundreds of thousands of Internet-connected computers in the
Search for Extraterrestrial Intelligence (SETI).

You can participate by running a program that downloads and analyzes
radio telescope data. There's a small but captivating possibility
that your computer will detect the faint murmur of a civilization
beyond Earth. There is a specific NetBSD group, which you can join
by selecting the 'Join this Group' link at the top of that page.