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The acronym SETI (for search for extraterrestrial intelligence) is used for efforts such as surveys aimed at receiving radio (or any) signals from life on other planets that have developed the technology to send such things. The SETI Institute is an organization to promote and sponsor such efforts. Sponsorship of such surveys has contributed to general radio astronomy, both by providing funded work that helps maintain radio telescopes that are principally used for other purposes, and by passing along data that is useful in other areas of astronomy. SETI searches have produced signals that motivated further investigation, but have yet to produce a signal that clearly indicates an intelligent source.