Extraterrestrials are already here. But they will not allow us to make contact with them until we evolve past our barbaric phase of civilization. Maybe once we learn to work together and stop killing one another of foolish things.
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.
