Are we alone in the universe?

UCLA SETI (http://seti.ucla.edu) uses the largest fully steerable telescope on Earth to search for evidence of civilizations in the Galaxy. We observe stars and their planetary systems at radio frequencies with the goal of detecting signals emitted by radio beacons or other powerful radio emitters. So far, we have observed 40,000 stars and detected over 60 million radio signals. Help us identify the most promising signals in our data. You will classify signals by matching them to common classes of radio frequency interference (RFI). Your classifications will be used to develop artificial intelligence tools to accelerate the search.