Examine two images of the globular cluster Omega Centauri, one taken in ultraviolet light and the other in visible light.

Image from the Hubble Space Telescope of the dense globular star cluster M15. Offered by Astronomy Picture of the Day.

Photograph from Astronomy Picture of the Day introduces the globular cluster M4, located 7000 light years away from the Earth.

View a Hubble Space Telescope image which captures the birth of a cluster of massive stars within the N81 nebula.

Astronomy Picture of the Day offers a colorful photograph of the NGC 1850 globular cluster and its smaller neighbor, NGC 1850B.

Examine a false-color x-ray image from the Chandra Observatory of the NGC 3603 star cluster. Includes a guide to the image colors.

Review a Hubble Space Telescope composite image of NGC1850, a sizable cluster of stars located in the Large Magellanic Cloud.

Enjoy a photograph of the M103 open cluster. Learn what you're seeing and how the age of the 20-million-year-old cluster was determined.

Three-color photograph of the globular star cluster M55 is accompanied by basic facts, including its location on the edge of the galaxy.

View a photograph of the open cluster M11. Image is credited to D. F. Malin of the Anglo-Australian Observatory.

Access a detailed photograph of aspherical globular cluster M19. Includes possible explanations of its strange shape.

Enjoy a photo of Kemble's Cascade, an asterism of approximately twenty stars. Image taken with a small telescope in New Mexico.

Composite color digital image from Las Campanas Observatory reveals the faint globular star cluster Palomar 13.