Impossible to disprove anything? Thats quite a stretch!
For example, we can say with a high degree of scientific certainty (based on our current assumptions) that starlight is coming at us from a greater distance than 6000 light years
You seem to start out saying "Oh, but Jon-boy, it
is possible to disprove things..." but then you end with an example that doesn't support that. We've positively proven X (starlight is coming from greater 6000 light years away), but we've also proven T (starlight is coming from greater than 19 light years away). We've never really disproven any of these dates; we've just not proven them. I've yet to see any scientist really set out to disprove the Earth being 15 seconds old. Instead, scientists look to find just how old the damn thing really is.
It's not that we've scientifically shattered and disproven all the claims of the Bible; such claims just have yet to be backed up. If I tell you I'm watching Wheel of Fortune, do you think I'd ever leave evidence of not doing something I'm not doing? Would I instead leave evidence I had a grill out with my friends?
Jon