Deepest galaxy cluster ever pictured by Hubble
Date published: 21st January 2014
The blue arcs in the picture are distant galaxies as they appeared 12 billion years ago - not long after the Big Bang.
The hidden objects are revealed through the "magnifying lens" of the cluster Abell 2744.
The image was unveiled at the 223rd meeting of the American Astronomical Society (AAS) in Washington DC.
It is the first in a set of super-deep views of the Universe taken by Hubble's Frontier Fields observing programme, and published on the Arxiv preprint server.To continue reading click here