Heat-seeking, alien-hunting telescope in the works

By Elizabeth HowellSpace.comWe might find aliens through the heat their civilizations give off, astronomers say, but it will take a megatelescope to do the job. Such a telescope, in fact, is planned.The telescope -- called Colossus -- would be a massive 250-foot (77 meters) telescope, which is more than double the aperture of any telescope yet constructed.To keep costs down, the proposed $1 billion ...