Can a galaxy “explode” ?

I’ve been looking across the internet for answers, which led me to this article:

[When Six Million Suns Explode; This actually happened, astronomers say, far out in space 11½ million years ago. Could such a cosmic disaster take place in our own galaxy some day? (Published 1964)](,exploded%20was%20one%20of%20them).

But I’m still not totally certain about the answer, since I’m getting a lot of answers besides things that would correlate with this article.