re: Starships are big
Remember 1991 VG:
http://www.setv.org/online_mss/1991vg.html
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998Obs...118..226S&db_key=AST
and the Apollo 12 stage:
http://www.planetary.org/html/news/articlearchive/headlines/2003/apollo12-debris.html
At least finding any artificial ETI debris in our solar system is a possibility.
