Hat Creek Radio Observatory, California

Created in the late 1950's by the Radio Astronomy Laboratory at the University of California, Berkeley, which managed the facility until 2012, when SRI International took over, the site was initially the home of the Berkeley-Illinois-Maryland Association (BIMA) radio telescope array, until its relocation in 2005. In 2007, the Allen Telescope Array (named after co-founder of Microsoft and major funder Paul Allen), became the successor to the BIMA array. A joint project between SETI and the University of California, Berkeley, the Allen Telescope Array is comprised of 42 dish antennas, which can be used as either one large composite dish, or as 42 independent ones. It has become a key component in SETI's ongoing search for evidence of extraterrestrial life.