Science ❯ Astronomy

Star Clusters

Globular Clusters Pleiades IC 348 NGC 2264 Omega Centauri NGC 602 Open Star Clusters Hyades Orion Nebula Open Clusters Young Stars Tidal Tail Star Clusters RCW 38 Globular Cluster NGC 6397 IC 347 Messier Objects Young Star Clusters Globular Star Cluster Formation History Individual Stars Formation Globular Star Clusters Young Star Cluster Christmas Tree Star Cluster Supernova Explosions Nearby Star Clusters Cluster of Stars Westerlund 1 Merging Star Clusters Perseus Constellation Specific Origins James Webb Space Telescope Omega Centauri Star Cluster Beehive Cluster Praesepe M67 Self-Gravitating Clusters R136 IRS 13 Stephenson 2

Hubble and Webb Pin Down First Stellar Black Hole in Omega Centauri

Decades of Hubble astrometry with JWST follow-up measured a 4.46‑solar‑mass object that suggests a hidden population challenging black‑hole formation models.

Hubble, Euclid and Subaru Reveal Ultra-Faint Galaxy Candidate Dominated by Dark Matter

New Images and Holiday Sky Guides Spotlight the Christmas Tree Cluster

Pleiades Recast as Core of a Vast 'Greater Pleiades' Stellar Family

Leonid Meteor Shower Peaks Predawn Nov. 17 Under Dark, Moonlight-Free Skies

8% Crescent Moon Meets Mars Low in the West Tonight

Black-Hole-Driven Cluster Model Challenges Dark-Matter Interpretation of Ursa Major III

ALMA Reveals 1.4-Light-Year Bubble Around Supergiant DFK 52

Earth’s Aphelion and Mercury’s Greatest Elongation Usher in July’s Night Sky Highlights

June Sky to Stage Antares Occultation, Strawberry Moon and Key Planetary Pairings