Season four, the only season to feature hour-long episodes, is generally regarded as the lowest-rated for The Twilight Zone, but this episode stands out as one of the best.
Thirty years earlier a colony from Earth went exploring through space and became marooned on a hot, desert planet with two suns, "perpatually shining." Survival is a struggle, and suicide is commonplace, but the intrepid "Captain" Benteen (Whitmore) keeps everyone together with his positive attitude, and acts as a father figure, really caring for the other members. When rescue comes, he is unwilling to let go.
This is a fine character study , as the "Captain", who plans on keeping the colony together with him as leader after they return to Earth, seems to take it personally when the others express plans of their own.
The opening monologue states that the planet is approximately one billion miles from Earth, but that would put it well within our own solar system, somewhere between Saturn and Uranus, so where did the other Sun come from? Never mind. This is a study in psychology, not astronomy.