Search for Extra-Terrestrial Intelligence (SETI) is the collective name for a number of activities people undertake to search for extraterrestrial life. SETI projects use scientific methods to search for electromagnetic transmissions from civilizations on distant planets. The United States government contributed to earlier SETI projects, but recent work has been primarily funded by private sources.
There are great challenges in searching across t...
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Search for Extra-Terrestrial Intelligence (SETI) is the collective name for a number of activities people undertake to search for extraterrestrial life. SETI projects use scientific methods to search for electromagnetic transmissions from civilizations on distant planets. The United States government contributed to earlier SETI projects, but recent work has been primarily funded by private sources.
There are great challenges in searching across the sky for a first transmission that could be characterized as intelligent, since its direction, spectrum and method of communication are all unknown beforehand. SETI projects necessarily make assumptions to narrow the search, and thus no exhaustive search has been conducted so far.
In 1960, Cornell University astronomer Frank Drake performed the first modern SETI experiment, named "Project Ozma", after the Queen of Oz in L. Frank Baum's fantasy books. Drake used a 26-meter-diameter radio telescope at Green Bank, West Virginia, to examine the...
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