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News Release Archive:

News Release 503 of 967

June 19, 2003 10:00 AM (EDT)

News Release Number: STScI-2003-18

The Secret Lives of Galaxies Unveiled in Deep Survey

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Image: Chandra Deep Field-North

Chandra Deep Field-NorthSTScI-PRC2003-18b

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ABOUT THIS IMAGE:

The Chandra Deep Field-North image was made by observing an area of the sky over half the size of the full moon for 23 days. It is the most sensitive or "deepest" X-ray exposure ever made. By combining the Chandra and Hubble data for this field, astronomers can take a census of the fraction of young galaxies that contain active supermassive black holes back to a time when the universe was only about one billion years old, less than 10 percent of its present age. The data show that these very distant supermassive black holes are rare, more so than some expected.

Object Names: GOODS, Hubble Deep Field, Chandra Deep Field

Image Type: Astronomical

Credit: NASA/CXC/Penn State/D.M. Alexander, F.E. Bauer, W.N. Brandt et al.

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