Supernova remnants disperse, therefore evidence of them fades away. The remnants can only be visible for approx. 10,000 years or so. You have to think beyond the simplicity of young earth theorists. It's so very easy to pokes holes in their "logic".
Oh, ok. I don't claim to know much about this. I was just following. That's interesting to and that would explain it. Thanks!
I just find the Cosmos interesting. It amazes me just how truly small we really are in comparison of things. The universe and its story has always fascinated me. Just so much out there.