Set during the middle of the 24th Century at the Space Academy (a training school for the Solar Guards) and aboard the 'Polaris', a Solar Guard training ship, this hugely-popular science-fiction series was one of the very few programs to air on all four major networks, including a brief period in 1951 when it ran on two networks simultaneously (NBC and ABC). It was seen three times weekly over CBS and ABC in fifteen-minute format, and in half-hour episodes on Saturdays over DuMont and NBC. Written by
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Space Academy, USA, in the world beyond tomorrow. Here the Space Cadets train for duty on distant planets. In roaring rockets, they blast through the millions of miles from Earth to far-flung stars and brave the dangers of cosmic frontiers protecting the liberties of the planets, safeguarding the cause of universal peace in the age of the conquest of space!
Edited into The Mercurian Invasion