by ashtuchkin on 6/8/14, 4:36 AM with 2 comments
by higherpurpose on 6/8/14, 6:44 AM
Probably the most "likely" of all the "fraction of lightspeed" (30-50%) starships.
by huxley on 6/8/14, 11:45 PM
I seem to remember a black hole powered starship being mentioned in a 1978 book edited by Jerry Pournelle called "Black Holes and Other Marvels"