Hubble space telescope spies teenage galaxies

Ultraviolet images probe star formation 5 billion to 10 billion years ago

DEEP SPACE  Ten thousand galaxies fill a tiny patch of sky in a new image from the Hubble Space Telescope.  Ultraviolet light (blue) comes from star factories in galaxies that were active 5 to 10 billion years ago. 

H. Teplitz and M. Rafelski/IPAC/Caltech, A. Koekemoer and Z. Levay/STScI, R. Windhorst/ASU, NASA, ESA

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