Take any three stars and they’ll form some kind of triangle. But there is only one Triangulum. It’s a small but ancient constellation surrounded by the larger constellations Andromeda to the north and west, Pisces to the southwest, Aries to the south, and Perseus to the northeast. While modest, Triangulum hosts many fine sight for stargazers on a northern autumn (or southern spring) evening. Here are some lovely highlights of this overlooked star group...