Largest shock wave in the universe is '60 times larger than the Milky Way,' new study finds - Livescience.com

The wave has been blasting through space at near-light-speed for 200 million years.

What happens when two of the largest objects in the universe collide? Simple, says a new study: They create one of the largest shock waves in the universe. Located about 730 million light-years f… [+2312 chars]

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