Transcript: SETI, the Search for Extraterrestrial Intelligence, is a small subfield of astronomy. It doesn’t get most of the astronomy funding, and some astronomers even disapprove of it. SETI seeks to set aside speculation about intelligent life in the universe and conduct the experiment, to actually look. As the physicist Philip Morrison said, “If we do look, the odds of success are difficult to evaluate, but if we don’t look, the odds are zero.” SETI must make strong assumptions about the nature of intelligence, technology, and communication, but it's a very exciting prospect, to do an experiment that could lead to the answer of whether we have companionship in the universe, of whether the extraordinary experiment of biology that took place on this planet and lead to humans is unique or not.