A half-hour episode of a science news program, this one on the controversial new subject of infoastronomy, the search for radio signals coming from other solar systems. L. Bob Rife has taken a personal interest in the subject; as various national governments auction off their possessions, he has purchased a string of radio observatories and hooked them together, using his fabled fiber-optic net, to turn them into a single giant antenna as big as the whole earth. He is scanning the skies twenty-four hours a day, lo............