Space 1999 did their own version of this one with the Dragon's Domain! Instead of a planet eating machine the monster in question was a cross between a Spider and an Octopus and sucked humans into it's maw! Commodore Decker became Tony Cellini the deranged pilot obsessed with getting revenge upon the beast that ate his crew rather than destroying the world where his people beamed down to!
JB
Arguably the single creepiest hour in TV sci-fi ever, at least until HBO gets into the act.
"Creepiest"? I don't know. There was the episode where they found a man sealed inside an asteroid. it turns out that the man was immortal and impossible to kill. Hi body would regenerate in seconds, no matter how badly you damaged it. he also was a sadist who kept torturing the crew of the station.
They realized that he was put inside the asteroid by his own people who were incidentally all immortals because he kept torturing them. That was creepy!