Articles
Guides to galaxies, nebulae, telescopes, and the night sky — for curious minds everywhere.
constellationsdeep skystar clusters
Perseus: The Double Cluster and Perseus Arm
The constellation Perseus is home to the famous Double Cluster, the variable star Algol, and lies along one of the Milky Way’s great spiral arms. Discover how to explore this rich region of the autumn and winter sky.
Team Visit Astronomy · Jan 6, 2026
deep skystar clustersobserving guides
The Hercules Cluster M13: Observing a Globular Masterpiece
M13, the Great Globular Cluster in Hercules, is one of the finest deep-sky objects visible from the Northern Hemisphere. Learn how to find it, what to look for at the eyepiece, and why this ancient star cluster fascinates astronomers.
Team Visit Astronomy · Jan 2, 2026