'Space Magnet' by Anthony Marriott

When Fireball XL7 mysteriously disappears, Commander Zero orders Steve, Venus and Matt to investigate inFireball XL5. Leaving Earth, the crew then discovers that the Moon is somehow being dragged out of orbit; Steve and his friends trace the source of the problem to the planet Magneton, where they find debris from XL7 is being used to feed a giant magnetic-force generating plant. However, before they can act, Steve, Venus and Matt are captured by the planet’s invisible inhabitants, the Solars…

Paul Maxwell (Colonel Steve Zodiac), Sylvia Anderson (Doctor Venus), David Graham (Professor Matt Matic / Lieutenant 90 / Zoony the Lazoon / Super Solar), John Bluthal (Commander Zero / Captain Ross), Gerry Anderson (Robert the Robot)

Directed by Bill Harris
Produced by Gerry Anderson
Associate Producer Reg Hill

TX (UK - ITV):
16th December 1963

Notes:
*Featuring Colonel Steve Zodiac, Venus, Professor Matt Matic, Commander Zero, Lieutenant 90 and Robert the Robot

*First appearance of Zoony the Lazoon