Forget The Death Star, We Need Weapons Using Gamma Ray Bursts

From Science 2.0:

A new type of exceptionally powerful and long-lived cosmic explosion, powerful blasts of high energy gamma-rays, known as gamma-ray bursts, that lasts hours rather than the more common minute, may mean a new hypothesis; that they arise in the violent death throes of a supergiant star.  The first example astronomers found was on December 25th, 2010, but it lacked a measurement of distance and so remained shrouded in mystery, with two competing ideas put forward for its origin. The first model suggested it was down to an asteroid, shredded by the gravity of a dense neutron star in our own galaxy, the second that it was a supernova in a galaxy 3.5 billion light years away, or in the more common language of astronomers at a redshift of 0.33.

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