A weekly half-hour program about space aliens — probably the only one in public radio (but who knows?) — has just been renewed for 26 weeks. Starting last Halloween, SETLAB Radio (the acronym means “Study of Extra-Terrestrial Life and Answers from Beyond”) has aired Sunday afternoons in south Texas — on KMBH in Harlingen and its repeater, KHID in McAllen. Host Russell Dowden says he’s gotten dozens of reports from Rio Grande Valley listeners that they, too, have seen unidentified flying objects. Then, several weeks ago, someone anonymously sent in a “very weird and very real-looking” image of a bulb-headed alien supposedly photographed aboard a U.S. Navy vessel. “It looks a little different from the normal Gray alien type, and has funny, textured skin.