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News Release 18 of 64

January 10, 2012 11:00 AM (EST)

News Release Number: STScI-2012-05

Hubble Pinpoints Farthest Protocluster of Galaxies Ever Seen

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Image: Hubble Spies Building Blocks of Most Distant Galaxy Cluster

Hubble Spies Building Blocks of Most Distant Galaxy ClusterSTScI-PRC2012-05

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ABOUT THIS IMAGE:

The composite image at left, taken in visible and near-infrared light, reveals the location of five tiny galaxies clustered together 13.1 billion light-years away. The circles pinpoint the galaxies.

The sharp-eyed Wide Field Camera 3 aboard NASA's Hubble Space Telescope spied the galaxies in a random sky survey. The developing cluster is the most distant ever observed. The young galaxies lived just 600 million years after the universe's birth in the big bang.

The average distance between them is comparable to that of the galaxies in the Local Group, consisting of two large spiral galaxies, the Milky Way and Andromeda, and a few dozen small dwarf galaxies.

The close-up images at right, taken in near-infrared light, show the puny galaxies. The letters "a" through "e" correspond to the galaxies' location in the wide-field view at left. Simulations show that the galaxies will eventually merge and form the brightest central galaxy in the cluster, a giant elliptical similar to the Virgo cluster's M87.

Galaxy clusters are the largest structures in the universe, comprising hundreds to thousands of galaxies bound together by gravity. The developing cluster presumably will grow into a massive galactic city, similar in size to the nearby Virgo cluster, a collection of more than 2,000 galaxies.

Object Name: BoRG 58

Image Type: Astronomical/Annotated

Credit: NASA, ESA, M. Trenti (University of Colorado, Boulder, and Institute of Astronomy, University of Cambridge, UK), L. Bradley (STScI), and the BoRG team

NEWS RELEASE IMAGES

The above montage includes these images:

Hubble BoRG 58 Survey Field Image Type: Astronomical Hubble BoRG 58 Survey Field Hubble BoRG 58 Candidate Galaxy - a Image Type: Astronomical Hubble BoRG 58 Candidate Galaxy - a Hubble BoRG 58 Candidate Galaxy - b Image Type: Astronomical Hubble BoRG 58 Candidate Galaxy - b Hubble BoRG 58 Candidate Galaxy - c Image Type: Astronomical Hubble BoRG 58 Candidate Galaxy - c Hubble BoRG 58 Candidate Galaxy - d Image Type: Astronomical Hubble BoRG 58 Candidate Galaxy - d Hubble BoRG 58 Candidate Galaxy - e Image Type: Astronomical Hubble BoRG 58 Candidate Galaxy - e

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