“Kepler has now discovered over 2,000 new worlds around other stars, most of them smaller than twice the size of Earth, and many probably having water,” said Geoff Marcy, professor of astronomy, University of California, Berkeley. “This flood of nearly Earth-size planets offers the first opportunity for us humans to hunt for other intelligent species that may have evolved on them.”
“Technological civilizations may communicate with their space probes located throughout the galaxy by using laser beams, either in visible light or infrared light,” he said. ”Laser light is detectable from other civilizations because the power is concentrated into a narrow beam and the light is all at one specific color or frequency. The lasers outshine the host star at the color of the laser.”
Marcy, who kicked off the search for extrasolar planets 20 years ago, plans to sift through data from the Kepler space telescope in search of evidence for civilizations advanced enough to have built massive orbiting “solar” power stations. Marcy is a member of the Kepler space telescope team that is observing the light from 160,000 stars in our galaxy in search of ones that dim periodically because of a planet passing or transiting in front of them. Theoretical physicistRaphael Bousso will look for ways of detecting universes other than our own, and try to understand what these alternate universes, or multiverses, will look like.