a zillion? not bloody likely. few thousand, i will grant. no more than 500 years really. Steel itself decays into unrecognizability in less than a millenia. we know this from the graves of the vikings, buried with their swords. the best specimens of viking steel lasted no longer than 700 years.
a millennia from today our bones will have decayed into nothing and our Window panes and Wine bottles and Drinking glasses will all have melted because Glass is a liquid.
whatever remains of our civilization (built on steel and glass) will either be bulldozed for a new civilization, or the aliens will be archaeologically finding only our 700-million year half life radio active burial sites.
topic for a whole discussion in itself.