the motley coed crew of a spaceflight to venus be force to fend for themselves and determine the future of mankind after the earth get destroy in a nuclear holocaust . the flat and fumbling direction by harry hope and lee sholem and stuart j. byrne tediously talky and uneventful script and the dull performance and the slow than two aged turtle walk uphill pace suck all the fun and vitality out of this excruciatingly leaden science fiction clunker . the hall of shame fade name cast make for pretty sad view represent former tarzan denny miller a a stern and no nonsense colonel and grant ( the monolith monster ) williams a the lecherous jerk captain and veteran tv actress mala power a a feisty russian astronaut and song and dance man bobby van a an obnoxious hipster and henry wilcoxon a a crusty old timer and top forty radio disc jockey casey kasem a a mission control announcer and and future m. a. s. h. tv series regular mike farrell a a tv reporter . stanley cortez ratty photography and the terrible tin eared dialogue ( he not really a fink while he just act like one ) and the droning and monotonously rattle stock film library score and david l. hewitt crummy ( substantially less than ) special effect and and the groan induce surprise twist end add extra abject insult to already appalling injury . a total turkey .