The Bussard ramscoop was featured in at least two episodes, 
ÒSamaritan SnareÓ and ÒNight Terrors.Ó In both cases, the system was 
backflushed so that hydrogen gas or plasma flowed out of the scoops (rather 
than into them as would normally occur). In the first usage, it resulted in a 
spectacular (but harmless) pyrotechnic display. During ÒNight Terrors,Ó the 
hydrogen stream was used to attempt to seal a dangerous spatial rift. The 
concept of using electromagnetic fields to collect interstellar hydrogen for 
fuel use was proposed by physicist Dr. Robert W. Bussard back in 1960.  Æ