The Benfords -- Jim at Microwave Sciences, Gregory at the University of California's Irvine campus, and Dominic (Jim's son) at NASA GSFC -- believe that advanced societies, if they are to be found, ought most likely to exist toward the galactic center, and probably at distances of over a thousand light years. We're thus talking, in all likelihood, about interstellar beacons rather than targeted transmissions when it comes to SETI. And if beacons are indeed at play, what can we say about their costs, and do our own standards of terrestrial cost have any application in an ETI context?
Thursday, October 30, 2008
SETI: Figuring Out the Beacon Builders