When astrophysicist Dr. Héctor Arce returned home to Puerto Rico in October of 2015, it was to bring a handful of Yale astronomy students to Arecibo Observatory, at that time, the largest single dish radio telescope in the world. For Héctor, a professor of astrophysics at Yale University, passion for the stars started at home. When Héctor was young, his grandfather used to build his own telescopes. “I still have them,” Héctor says. Staring through the lenses of those telescopes with his grandfather opened a universe of possibility for young Héctor.