after an explosion the shockwave comes first before the debris so we would be scattered within what would be left of the explosion. Looking around it would look like the end of the world. I can really agree the shockwave went further than the debris . Looking at the site of the explosion you wound'nt see much.So we are just looking at a layer of the big bang. Who knows the shockwave could still be traveling while the universe is expanding with it. Just my opinion