The systematic program for the Search for Extraterrestrial Intelligence (SETI) can be dated to fifty years ago this past week. It began with astronomer Frank Drake, who turned a 85-foot radio telescope to the sky in search for a signal:

The astronomer's solitary vigil lasted for a few weeks; he ran out of telescope time with little to report. Nevertheless, his pioneering effort sparked the genesis of a 50-year project known as the Search for Extraterrestrial Intelligence, now an international research program with a multimillion-dollar budget. It has included renting time on some of the biggest radio telescopes in the world—such as the 1,000-foot dish at Arecibo in Puerto Rico, featured in the James Bond movie "GoldenEye." [...]

The search for extraterrestrial intelligence, once considered a quixotic enterprise at best, has now become part of mainstream science. In the past decade or so, over 400 planets have been found orbiting nearby stars, and astronomers estimate there could be billions of Earth-like planets in the Milky Way alone. Biologists have discovered microbes living in extreme environments on Earth not unlike conditions on Mars, and have detected the molecular building blocks of life in deep space as well as in meteorites. Many scientists now maintain that the universe is teeming with life, and that some planets could harbor intelligent organisms.

Link via Glenn Reynolds | Photo: NASA

Previously on Neatorama:
Earth is Becoming Less Detectable to Extraterrestrials
Searching for Aliens to Cost School System $1 Million