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A Supernova Blast May Have Caused a Mass Extinction 359 Million Years Ago

New Supernova in Sky May Shine for Months

New Supernova in Sky May Shine for Months

NASA Releases Hubble Images of Star at the Exact Moment it Explodes

ASASSN-15lh is 570 Billion Times Brighter Than Our Sun and More Than 20 Times Brighter Than All Stars Together in Milky Way