NASA telescopes watch cosmic violence, mysteries unravel

NASA images from its Kepler, Hubble, Spitzer, Chandra telescopes highlight space show

This one wasn't a NASA discovery but a University of Notre Dame astronomer this week said they discovered a distant star that exploded when its center became so hot that matter and anti-matter particle pairs were created. The star, dubbed Y-155, began its life around 200 times the mass of our Sun but probably became unstable and triggered a runaway thermonuclear reaction that made it visible nearly halfway across the universe.

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