![The supernova that wasn’t: A tale of 3 cosmic eruptions](https://i1.wp.com/scienceblog.com/wp-content/uploads/2016/09/The-supernova-that-wasnt-A-tale-of-3-cosmic-eruptions-.jpg?resize=400%2C250&ssl=1)
In
the mid-1800s, astronomers surveying the night sky in the Southern
Hemisphere noticed something strange: Over the course of a few years, a
previously inconspicuous star named Eta Carinae grew brighter and
brighter, eventually outshining all other stars except...
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