News tagged with cluster galaxies

Image: Active Galaxy Centaurus A

(PhysOrg.com) -- Resembling looming rain clouds on a stormy day, dark lanes of dust crisscross the giant elliptical galaxy Centaurus A.

Jan 04, 2012
4.8 / 5 (4) 0

Space Image: Ring of fire

(PhysOrg.com) -- This composite image shows the central region of the spiral galaxy NGC 4151. X-rays (blue) from the Chandra X-ray Observatory are combined with optical data (yellow) showing positively charged ...

Dec 28, 2011
4.9 / 5 (7) 2 | with audio podcast

A galaxy cluster gets sloshed

(PhysOrg.com) -- Like wine in a glass, vast clouds of hot gas are sloshing back and forth in Abell 2052, a galaxy cluster located about 480 million light years from Earth. X-ray data (blue) from NASA's Chandra ...

Dec 14, 2011
4.5 / 5 (4) 2 | with audio podcast

A serendipitous gravitational lens

(PhysOrg.com) -- The path traveled by a light beam will bend in the presence of matter. This remarkable prediction, reached by Einstein in his theory of general relativity, was confirmed by observations of ...

Nov 21, 2011
4.3 / 5 (6) 3 | with audio podcast

Hubble survey carries out a dark matter census

(PhysOrg.com) -- The NASA/ESA Hubble Space Telescope has been used to make an image of galaxy cluster MACS J1206.2-0847. The apparently distorted shapes of distant galaxies in the background is caused by an ...

Oct 13, 2011
4.2 / 5 (6) 8 | with audio podcast

Homeless supernovae

In a post earlier this month, we looked at a team of astronomers searching for stars that were on ejected from their birthplaces in clusters. These stars could receive the needed kick from a gravitational swing ...

Sep 27, 2011
5 / 5 (2) 2

Globular clusters on a plane

Globular clusters are generally some of the oldest structures in our galaxy. Many of the most famous ones formed around the same time as our galaxy, some 13 billion years ago. However, some are distinctly ...

Sep 23, 2011
5 / 5 (1) 5