In January, scientists said they discovered an exploding star ending in a super-luminous supernova that was almost inconceivably bright — more so than the output of the entire Milky Way. Now, new research shows the distant flare may have actually been the result of a rare cosmic collision.
Even when news about the exploding star was announced, it didn’t quite seem like your run-of-the-mill supernova explosion of a star at the end of its life.
“The explosion’s mechanism and power source remain shrouded in mystery because all known theories meet serious challenges in explaining the immense amount of energy ASASSN-15lh has radiated,” astronomer Subo Dong said in a statement at the time.
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