With many scientists increasingly convinced that we are not alone in the universe, take a look at how alien contact might occur. Renowned NASA scientists, planet-hunters and astronomers reveal emerging methods of finding earthlike planets and alien life and look at possible future techniques, including fiber-optic probing and interstellar travel powered by light at warp speeds. Also, get an inside look at the $50 million Allen Telescope Array in northern California designed to hear from extraterrestrials. Could our time alone in the universe be coming to an end?