Monster collision in space

Four clusters of galaxies are smashing into each other

By Christopher Crockett, 09:23 AM June 19, 2014

BOSTON — A galactic pileup is underway 5 billion light-years from Earth. The colossal collision is spewing charged particles. And this fountain is huge. It’s jetting particles at nearly the speed of light some 2.5 million light-years into intergalactic space. One might think of the event as building a powerful particle accelerator — one up to a million times as strong as Earth’s mightiest (the Large Hadron Collider).

Astronomers reported the intergalactic fireworks at the American Astronomical...

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