U. Hawaii astronomy team look back in time using X-ray backgrounds University Wire | March 10, 2000| | . Provided by ProQuest LLC. (Hide copyright information) Copyright

Alisa Estrella
University Wire
03-10-2000
(Ka Leo O Hawaii) (U-WIRE) HONOLULU -- Using Mauna Kea, Hubble telescope and Chandra X-ray Observatory data, Amy Barger, University of Hawaii astronomer, helped solve a universal mystery.

A team of astronomers, which included fellow UH Institute for Astronomy astronomer Lennox Cowie, now know the source of the majority of X-ray backgrounds.

"The X-ray background is the cumulative emission of X-rays from everything beyond our galaxy," Barger said.

X-rays are a type of high-energy light that are invisible to the human eye. To observe the high-energy ...

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