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While stargazing, Prof. Matic discovers a new planet, but it doesn't read on any electronic instruments. Curious, Steve and the others set out in the XL5 to investigate, and find that the planet is more sinister than first thought...
First Air Date : Oct 28, 1962
Last Air date : Oct 27, 1963
Episode : 39 Episode
Season : 1 Season
Runtime: 25 minutes
Studio: Associated Television
Country: