When we look at the night sky, are *any *stars we see dead? Are there any 1000-light year distant stars that astronomers think died 500 years ago? We’d still be seeing their light, and will do so for another 500 years.
It’s certainly true that the vast majority are still around, but are there any at all that probably no longer exist?
I mean stars that are visible as single points of light with the naked eye, or a low-powered telescope. Distant galaxies that can be seen with the Hubble telescope don’t count.