Clusters

Dense swarms of stars bound by gravity, from young open clusters to ancient globulars.

M5: Globular Cluster in Serpens

One of the oldest and largest globular clusters in the Milky Way, its blazing core surrounded by a vast swarm of red giants and blue stars.

11h 25m • 2024, 2026

M13: The Great Globular Cluster in Hercules

One of the most spectacular globular clusters in the northern sky, a dense sphere of several hundred thousand ancient stars resolved right down to its core.

6m • 2023

M22: The Great Sagittarius Cluster

One of the nearest globular clusters to Earth, set against the dense star fields of the Milky Way toward the galactic center.

6h 10m • 2023

M45: The Pleiades

The famous Seven Sisters open cluster, its hot blue stars wrapped in delicate wisps of reflection nebula.

7h 15m • 2022