All Articles Tagged As: galaxy clusters

Shedding light on the cosmic skeleton (11/5/2009)

Astronomers have tracked down a gigantic, previously unknown assembly of galaxies located almost seven billion light-years away from us. The discovery, made possible by combining two of the most powerful ground-based telescopes in the world, is the first observation of such a prominent galaxy structure in the distant Universe, providing further insight into the cosmic web and how it formed. ...> Full Article

Galaxy cluster smashes distance record (10/23/2009)

The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes. The cluster is located about 10.2 billion light years away, and is observed as it was when the universe was only about a quarter of its present age. ...> Full Article

Largest ever survey of very distant galaxy clusters completed (7/1/2009)

An international team of researchers led by Gillian Wilson, an astronomer at the University of California, Riverside, has completed the largest ever survey designed to find very distant clusters of galaxies. Named the Spitzer Adaptation of the Red-sequence Cluster Survey, "SpARCS" detects galaxy clusters using deep ground-based optical observations. SpARCS is designed to find clusters, snapped as they appeared long ago in time, when the universe was 6 billion years old or younger. ...> Full Article

Suzaku snaps first complete X-ray view of a galaxy cluster (5/30/2009)

The joint Japan-US Suzaku mission is providing new insight into how assemblages of thousands of galaxies pull themselves together. For the first time, Suzaku has detected X-ray-emitting gas at a cluster's outskirts, where a billion-year plunge to the center begins. ...> Full Article

Cosmic heavyweights in free-for-all (4/20/2009)

The most crowded collision of galaxy clusters has been identified by combining information from three different telescopes. This result gives scientists a chance to learn what happens when some of the largest objects in the Universe go at each other in a cosmic free-for-all. ...> Full Article

Exceptionally deep view of strange galaxy (2/10/2009)

A spectacular new image of an unusual spiral galaxy in the Coma Galaxy Cluster has been created from data taken by the Advanced Camera for Surveys on the NASA/ESA Hubble Space Telescope. It reveals fine details of the galaxy, NGC 4921, as well as an extraordinary rich background of more remote galaxies stretching back to the early universe. ...> Full Article

Dark energy found stifling growth in universe (12/20/2008)

For the first time, astronomers have clearly seen the effects of 'dark energy' on the most massive collapsed objects in the Universe using NASA's Chandra X-ray Observatory. By tracking how dark energy has stifled the growth of galaxy clusters and combining this with previous studies, scientists have obtained the best clues ever about what dark energy is and what the destiny of the universe could be. ...> Full Article

Ghostly glow reveals galaxy clusters in collision (10/19/2008)

A team of scientists have detected long wavelength radio emission from a colliding, massive galaxy cluster which, surprisingly, is not detected at the shorter wavelengths typically seen in these objects. ...> Full Article

A Clash of Clusters Provides Another Clue to Dark Matter (8/28/2008)

Another powerful collision of galaxy clusters has been captured with NASA's Chandra X-ray Observatory and Hubble Space Telescope ...> Full Article

Astronomers search for orphan stars using newly upgraded telescope (5/28/2008)

New camera sees first light ...> Full Article

Old galaxies stick together in the young universe (4/9/2008)

Astronomers have developed the most sensitive infrared map of the distant universe ever produced, revealing the origins of the most massive galaxies in the cosmos ...> Full Article

Giant Particle Accelerator Discovered In The Sky (1/28/2008)

ESA's orbiting gamma-ray observatory, Integral, has made the first unambiguous discovery of highly energetic X-rays coming from a galaxy cluster. The find has shown the cluster to be a giant particle accelerator. ...> Full Article