Project Gutenberg 2010-09-05 Public domain in the USA. 1467 Wollheim, Donald A. 1914 1990 Wollheim, Donald Allen Pearson, Martin Gordon, Millard Verne Gordon, Millard V. The Secret of the Ninth Planet Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Secret_of_the_Ninth_Planet Produced by Greg Weeks, Roger L. Holda, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net "The Secret of the Ninth Planet" by Donald A. Wollheim is a science fiction novel written in the late 1950s. The story centers around Burl Denning, a young member of an expedition searching for Inca treasures in the Andes, who abruptly becomes embroiled in a global crisis involving the theft of sunlight from the Earth. The narrative combines themes of adventure, exploration, and the implications of advanced technology set against the backdrop of space. The opening of the novel introduces Burl Denning and his expedition as they study ancient ruins in Peru while the world around them begins to experience a mysterious dimming of sunlight. As they notice these changes, they receive an urgent message from the U.S. Air Force, indicating that they are the closest scientifically trained personnel to the source of this sunlight disturbance. This prompts them to embark on a treacherous journey to uncover the cause, leading them to a black structure in a remote valley. There, they discover advanced technology, suspecting it's the work of an extraterrestrial race attempting to siphon energy from the Sun, which sets the stage for an interplanetary adventure to save their world. (This is an automatically generated summary.) file:///public/vhost/g/gutenberg/html/files/33644/33644-h/images/cover.jpg http://book.klll.cc/files/33644/33644-h/images/cover.jpg Reading ease score: 73.8 (7th grade). Fairly easy to read. en Science fiction Pluto (Dwarf planet) -- Fiction PS Text Science Fiction Category: Science-Fiction & Fantasy Category: Adventure Category: Novels Category: American Literature 312726 2025-08-13T13:48:42.631776 text/html 312824 2011-04-30T10:30:10 text/html 268871 2025-08-13T13:48:46.920724 application/epub+zip 272355 2025-08-13T13:48:43.323796 application/epub+zip 189975 2025-08-13T13:48:42.963729 application/epub+zip 384953 2025-08-13T13:48:49.849733 application/x-mobipocket-ebook 359323 2025-08-13T13:48:46.496745 application/x-mobipocket-ebook 277221 2022-09-15T11:00:23.581156 application/x-mobipocket-ebook 294748 2025-08-13T13:48:42.202768 text/plain; charset=us-ascii 294656 2011-04-30T10:29:36 text/plain; charset=us-ascii 294674 2011-04-30T10:29:08 text/plain; charset=us-ascii 21615 2025-08-13T13:48:49.983704 application/rdf+xml 23714 2025-08-13T13:48:43.042752 image/jpeg 3899 2025-08-13T13:48:43.004728 image/jpeg 112175 2011-04-30T10:30:54 application/octet-stream application/zip 256943 2011-04-30T10:30:54 application/octet-stream application/zip 112154 2011-04-30T10:30:54 application/octet-stream application/zip 257481 2025-08-13T13:48:42.663752 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