Astronomers may have spotted the 1st known 'superkilonova' double star explosion - Space

1. Astronomers may have spotted the 1st known 'superkilonova' double star explosion  Space
2. Strange Cosmic Blast May Be First-Ever Superkilonova Observed  Scientific American
3. Did Astronomers Just Find a ‘Superkilonova’ Double Explosion? Maybe.  Universe Today
4. Possible "Superkilonova" Exploded Not Once But Twice  Caltech
5. Double Cosmic Explosion Gives Birth to Unprecedented ‘Superkilonova’  Gizmodo

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