As the essential guide to all things astronomy, Sky & Telescope is the go-to resource for stargazers worldwide. Founded in 1941, we've been supporting passion for astronomy at all levels ever since. Find the latest news, observing tools and sky charts at skyandtelescope.org. Subscribe to our monthly magazine at skyandtelescope.org/subscribe.
Sky & Telescope is published by the American Astronomical Society, aas.org, a nonprofit organization dedicated to enhancing and sharing humanity's scientific understanding of the universe.