in this film and the astronaut send to explore a newly discover planet must deal with several dilemma and and they do so intelligently . the film approach it main plot theme in a unique way and and unfolds it gradually and though it can be guess beforehand . the acting be very good and though sometimes stiff and a some late 60 act can be . it can also be somewhat wordy and even melodramatic and especially after the plot theme reveal itself . visually and it have a scene that resemble one in the previous year 2001 represent a space odyssey and and that tend to date the movie . some of the actor go on to star in the 1970 tv show ufo and which be delightfully campy and worth check out on dvd . despite these small point and the space flight itself be realistic and and consider this be 1969 and the scene inside the cockpit of the spacecraft also have a realistic look . ( look for some 1990s/2000s video technology in use and too . ) one thing represent i suspect a love scene have be cut and but i can not prove it . it would have be a distraction anyway . unlike most sci fi film and this film will make you think about the plot and and that well worth a look . i be please to have this film in my video library .