I found explosion.

In 2016, German researchers from the Center for Astronomy and Astrophysics of the Berlin Institute of Technology calculated that a supernova explosion less than 25 light years away from Earth would trigger a mass extinction and the damage would be progressively reduced up to 65 light years, beyond that we would have exceeded the risk area, so 65 light years could be said to be the safety distance.

Because in the journey of the solar system through the galaxy we have sometimes passed through very dangerous regions, for example, the explosion of a nearby supernova is one of the explanations that scientists give to the event of the great extinction of the Ordovician, some 440 million years ago. of years.