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News Release Archive:

News Release 283 of 966

May 20, 2008 09:00 AM (EDT)

News Release Number: STScI-2008-20

Hubble Survey Finds Missing Matter, Probes Intergalactic Web

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Image: Hubble Looks for Missing Matter

Hubble Looks for Missing MatterSTScI-PRC2008-20a

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ABOUT THIS IMAGE:

This illustration shows how the Hubble Space Telescope searches for missing ordinary matter, called baryons, by looking at the light from quasars several billion light-years away. Imprinted on that light are the spectral fingerprints of the missing ordinary matter that absorbs the light at specific frequencies (shown in the colorful spectra at right). The missing baryonic matter helps trace out the structure of intergalactic space, called the "cosmic web."

Image Type: Illustration

Credit: NASA, ESA, and A. Feild (STScI)

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