It is the biggest enigma I have found in a decade of studying stellar explosions.
The mysterious object, which bears the name iPTF14hls, was captured in 2014 and in principle the astronomers believed that it was a “normal” type II-P supernova. But he experiences spectacular energetic eruptions that look like terminals and then recomposes himself to explode once more. The zombie star could be the first known example of a phenomenon that had only been described at a theoretical level, the so-called Unstable Supernova Pulse.

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