Sudy has a great description of feminism as the constellation Orion:
Feminism, as a collective movement, needs to sustain a habit of frequent communication between the movements. Borrowing from astronomy, the Orion is a sisterhood of stars that make up one constellation. Few can name the individual stars that align the famous celestial sighting, but the sight, in its entirety, is easily recognized by children and sky watchers alike. Similarly, feminists need to promote and advocate its own plural make-up, and also need to demand that same understanding from reporters, writers, bloggers, educators, and activists.
Photo by Cestomano, shared under a Creative Commons license