X-ray flashes tied to low-end massive stars

Massive stars as much as 40 times bigger than our sun often produce brilliant gamma-ray bursts when they explode, leaving behind black holes.

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<p><a href="http://www.physorg.com/news76173039.html">X-ray flashes tied to low-end massive stars</a></p> <p>Massive stars as much as 40 times bigger than our sun often produce brilliant gamma-ray bursts when they explode, leaving behind black holes.</p>