For over two decades, millions of people volunteered the computational capacity of their computers to help UC Berkeley scientists in their search for extraterrestrial intelligence (SETI). The goal of the project, called SETI@home, was to trawl through data collected by the Arecibo Observatory in Puerto Rico for signs of unusual radio signals from the cosmos. It’s not the cheapest way to do SETI.”And plenty of what-ifs remain, especially considering the limitations of the SETI@home project. “There’s still the potential that ET is in that data and we missed it just by a hair,” he pondered. More on radio signals: Scientists Intrigued by Radio Signals Coming From Comet