An international team of astronomers reports the discovery of a new protocluster of massive quiescent galaxies at a redshift of approximately 4.0. This is the first detection of a protocluster of this type at such a high redshift. The finding was detailed in a paper published Nov. 20 on the pre-print...
Source: phys.org
APOD: 2016 November 28 - Arp 240: A Bridge between Spiral Galaxies from Hubble
Source: nasa.gov