A Wrinkle in Time?

Unusually short but intense “fireballs” in the distant universe might be created by the plucking of invisible cosmic strings—ultradense flaws in space-time—a new study suggests.  Some gamma-ray bursts stay visible for several seconds to a few minutes. Scientists think these long-duration bursts are created when the cores of very massive stars collapse and explode.  Other bursts are much more brief—sometimes lasting just fractions of a second—and it’s unclear what triggers them.

Site – http://news.nationalgeographic.com

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