******SPACE RACE SPOILERS!****** I’m still feeling a bit of moon fever after the success of the recent Artemis 2 flight, so this column will examine a relatively obscure moonshot movie from the late 1960s called “Countdown.” Directed by the late iconic filmmaker Robert Altman (“M*A*S*H,” “Nashville,” “The Player”) and produced by actor Willam Conrad (“Ironside”),…