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Newly Discovered Supernova Is Brightest Ever Seen

A newly discovered supernova that astronomers say is the brightest exploding star ever seen is baffling scientists all over the world. The star, labeled ASASSN-151h, is about 3.8 billion light-years from Earth. Scientists say at its peak, it is 20 times brighter than all the stars in the entire Milky Way combined and an astounding 570 billion times brighter than the sun. What is puzzling astronomers is what is causing the supernova's intensity. They say every theory put forth so...

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