Project Gutenberg 2020-04-25 Public domain in the USA. 134 Gallun, Raymond Z. (Raymond Zinke) 1911 1994 Gallun, Raymond Zinke Paul, Frank R. (Frank Rudolph) 1884 1963 Paul, Frank Rudolph Invaders of the Forbidden Moon Produced from Planet Stories Summer 1941 Produced by Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net "Invaders of the Forbidden Moon" by Raymond Z. Gallun is a science fiction novel written in the early 1940s. Set in a futuristic universe where space travel is possible, the story focuses on the dangers surrounding Io, one of Jupiter's moons known for its catastrophic energy barrier that destroys any craft attempting to approach. The narrative explores themes of exploration, the quest for knowledge, and the perplexing consequences of humanity's ambitions. The storyline follows Evan Harwich, an interplanetary patrolman who witnesses the fatal destruction of an experimental spaceship attempting to breach the forbidden reaches of Io. Despite the dangers, Paul Arnold, the son of the ship's deceased inventor, seeks to investigate the mysterious forces at play on the moon, believing there is advanced technology within. Harwich joins Arnold on a perilous adventure, ultimately crashing onto Io with limited survival gear. Amidst the ruins of an ancient civilization, they unveil the history of the once-great Ionians who, having entrusted their existence to machines, regressed into a primal state. The plot thickens as they confront the treacherous George Bayley, who exploits Io's powerful technology for his own gain, leading to a climactic struggle that shapes the fate of all involved. Ultimately, the novel culminates in profound reflections on the relationship between technology, power, and the human condition. (This is an automatically generated summary.) Reading ease score: 75.6 (7th grade). Fairly easy to read. en Science fiction Adventure stories Io (Satellite) -- Fiction PS Text Category: Science-Fiction & Fantasy Category: Novels 126486 2025-07-24T12:55:22.507228 text/html 103243 2024-10-17T17:45:30 text/html 377211 2025-07-24T12:55:24.829217 application/epub+zip 378066 2025-07-24T12:55:22.909232 application/epub+zip 108681 2025-07-24T12:55:22.684227 application/epub+zip 433088 2025-07-24T12:55:26.460298 application/x-mobipocket-ebook 424834 2025-07-24T12:55:24.618243 application/x-mobipocket-ebook 155685 2022-09-27T23:32:57.884501 application/x-mobipocket-ebook 119030 2025-07-24T12:55:22.241235 text/plain; charset=us-ascii 99239 2024-10-17T17:45:30 text/plain; charset=us-ascii 17689 2025-07-24T12:55:26.601200 application/rdf+xml 38813 2025-07-24T12:55:22.769218 image/jpeg 5823 2025-07-24T12:55:22.726229 image/jpeg 555613 2025-07-24T12:55:22.530299 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia en.wikipedia