Andrew Hamilton, who will present the popular program "Black Holes and Relativity," at Fiske Planetarium, says the show was created partly by accident. The program is the second in a series of live public astronomy shows to be held at Fiske Planetarium at the University of Colorado this semester. "Black Holes" is set for Tuesday, Feb. 16, and Friday, Feb. 19, at 7:30 p.m. It will last about an hour and a half.