Stellar Collision Triggers Supernova Explosion - National Radio Astronomy Observatory
![](https://public.nrao.edu/wp-content/uploads/2021/08/nrao21df06a.jpg)
The Very Large Array Sky Survey gave astronomers the first clue that ultimately revealed a dramatic story -- the remnant of a star that exploded long ago had plunged into the core of its companion star causing it, too, to explode as a supernova.
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2021 Top Discoveries: Stellar Collision Triggers Supernova
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Giant dying star explodes as scientists watch in real time — a first for astronomy