Astronomers have discovered a new kind of star system: Elongated and clumpy clusters of young, hot, blue stars, formed out of gas blown out of a galaxy as it rams its way through a galaxy cluster.

A new 527-megapixel image captures two open star clusters, NGC 456 and NGC 460, orbiting our Milky Way galaxy. The image uses ...

Hubble captures forgotten globular cluster ESO 591-12 in rare detail ESO 591-12 sparkles with red and blue stars of varying ...

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A brilliant blue star cluster shines brightly about 1,500 light-years from Earth in this new photo released by the European Southern Observatory.

Hubble’s Wide Field Camera 3 captured the star cluster Liller 1, a 30,000 light-year distant system that formed stars over 11 ...

This week's Hubble image is, appropriately enough, a star cluster called NGC 330 which glitters in shades of red, white, and blue.

One image with blue nebulosity includes near-infrared light as well as visible light, ... This Hubble image shows the star cluster NGC 1850, located about 160,000 light-years away.

Nearby star cluster houses unusually large black hole ... Its spectrographs could also potentially pick up the red and blue shifts in light caused by the star's motion.

This amazing star cluster is some 444 light years from Earth and is a young stellar group made up of young hot blue stars. In mythology, the Pleiades are the daughters of the great Atlas and Pleione.

Captured by La Silla Observatory in Chile, the cluster is scattered among crimson clouds of gas. At the bottom of the image is the aptly named Cone Nebula , a star-forming region about 2,500 light ...