Galaxy groups and clusters are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation. They form the densest part of the large-scale struc
MACS J0152.5-2852 is a massive galaxy cluster. Almost every object seen in the image is a galaxy, each containing billions of stars.
Rich scattering of galaxies was captured by the MPG/ESO telescope.
Galaxy cluster ACO 3341 seen by VLT's VIMOS
Galaxy Cluster LCDCS-0829 acting like a giant magnifying glass. This strange effect is called gravitational lensing.
A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to
Galaxy groups and clusters
…AGN) have been used as tracers of cluster location. At high redshift imaging around individual radio sources (in this case AGN) has been used to detect protoclusters (clusters in the process of forming). Sunyaev-Zel'dovich effect: The hot electrons in the intracluster medium scatter radiation from the cosmic microwave…
Composite image of BoRG-58, a group of 5 galaxies clustered together just 600 million years after the Universe's birth
Galaxy cluster IDCS J1426 is located 10 billion light-years from Earth and has the mass of almost 500 trillion suns (multi-wavelength image: X-rays in blue, visible light in green, and infrared light in red).
Abell 2744 galaxy cluster – extremely distant galaxies revealed by gravitational lensing (16 October 2014).
Galaxy cluster SPT-CL J0615-5746.