What do you get when you mix together Harry the Husky, kid-friendly science exhibits featuring UW research, and the Husky Marching Band? The third annual Paws-On Science: Husky Weekend, a collaboration of Pacific Science Center and the University of Washington’s Office of External Affairs. Hours are 10 a.m.-5 p.m. Friday and 10 a.m.-6 p.m. Saturday and Sunday.