Star Clusters

Deep-Sky Objects, Galaxies, Stars

The constellation Columba, globular cluster NGC 1851, and spiral galaxy NGC 1808

Deep-Sky Objects, Stars

The Beehive Cluster (M44), open cluster M50, and the Rosette Nebula (NGC 2237–9/46)

Deep-Sky Objects, Stars

Twin stars Castor and Pollux, the 9–12 Geminorum Cluster, and the Eskimo Nebula

Deep-Sky Objects, Galaxies, Stars

The extinct constellation Musca Borealis, open cluster Collinder 464, and spiral galaxy NGC 2403

Deep-Sky Objects, Stars

Radio telescopes give clues to structure, history of the Milky Way

Deep-Sky Objects, Stars

The double star Alnitak, open cluster NGC 1817, and the Oyster Nebula (NGC 1501)

Deep-Sky Objects

What are typical star-to-star distances in globular clusters compared to stellar distances in our region of the galaxy?

Deep-Sky Objects, Stars

Globular star clusters survive 13-billion-year-old massacre