Despite attempts to sabotage his newly-invented fusion drive spacecraft, a young scientist investigates the sinister, eminent head of the space colony who is hiding serious flaws in his own new craft.
Nancy and her friends, in search of information about a UFO, become involved in another mystery involving the inheritance of an old man who lives in the forest.
A comprehensive guide to military and commercial aircraft past and present offers detailed color illustrations for plane-spotters and gives a history of airliners from early flight to the modern jumbo jets
An alien probe found wrecked on one of Jupiter's moons and containing insane "intelligence" is stole from a laboratory before its secret of stardrive is obtained.