A "Hubble Atlas" of Ancient Galaxies

Hubble Space Telescope's high resolution allows astronomers to classify galaxies in a cluster (CL 0939+4713) that existed four billion years ago, when the universe was two-thirds of its present age.

The galaxies in this mosaic are arranged according to the well-established system developed by American astronomer Edwin Hubble in the 1920s. Despite the cluster's great distance of four billion light-years, the Space Telescope pictures are sharp enough to distinguish between various forms galaxies.


Alan Dressier, Carnegie Institution, and NASA/ESA Co-investigators:Augustus Oemler (Yale Urnversfty), James E. Gunn (Princeton Universfty), HarveyButcher (the Netherlands Foundation for Research in Astronomy).

About the Image

NASA press release
NASA caption
Release date:1 December 1992, 06:00
Size:3551 x 2295 px

About the Object

Name:CL 0939+4713
Type:• Early Universe : Galaxy : Grouping : Cluster
Distance:z=0.406 (redshift)

Image Formats

Large JPEG
2.2 MB
Screensize JPEG
145.9 KB

Colours & filters

720 nm Hubble Space Telescope

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