Not George Pal's best,but at least he had us farther along then we are now.His unflagging optimism was all up there on the screen.As a kid who built space ship models I loved this stuff.The film drags a little now,but the dead astronaut's body tagging along for the ride till his "at sea" burial,kept me awake all night at age 8.movie trivia moment:character actor William Redfield who washed out of the mission crew got to pilot the miniaturized sub in "Fantastic Voyage".Talk about perseverance!