Wednesday, April 29, 2009

A New Cosmic Distance Record

Something big happened in the sky on April 23. The Swift satellite spotted a brilliant gamma-ray burst. NASA astronomers determined its distance at 13.035 billion light years or within 5% of the edge of time and the universe as we understand it. For more on this event, here is a direct link, courtesy of spaceweather.com.

Ultraviolet/optical and x-ray composite image: NASA/Swift/Stefan Immler

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