When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up ...
The brightest cosmic object of its kind ever detected may have helped astronomers solve the mystery of powerful, bright blue cosmic explosions. At the heart of the discovery is a signal from a ...
Forty million years ago, a star in a nearby galaxy exploded, spewing material across space and generating a brilliant beacon of light. That light traveled across the cosmos, reaching Earth June 29, ...
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