Seems anytime someone wants to make a movie about Astronauts going to Mars, it stinks. This is one of those. The cast, including Darren McGavin (perhaps he had nothing to do that weekend), and Nick Adams (who would soon be dead by his own hand), are in this quicksand of a movie (the only thing quick about this dull mess) land on Mars and discover-well that would ruin it for anyone who hasn't seen this mess yet. The footage is all stock Saturn footage from NASA. The sets are incredibly cheap as are the "un-special effects". The sets are laughable as are the 'space suits." Seems that like with NASA, were most of their missions failed, movies going to Mars also fail. I won't even get into the scientific inaccuracies. That would take far too long...
Review of Mission Mars
