In a case of comic mistaken identity, an international team of astronomers revealed that what they once thought was a supernova is actually periodic flaring from a galaxy where a supermassive black hole gives off bursts of energy every 114 days as it tears off chunks of an orbiting star.
![](https://scx1.b-cdn.net/csz/news/tmb/2021/mistakeniden.jpg)
Source:
https://phys.org/news/2021-01-mistaken-identity-presumed-supernova-rarer.html