Project Gutenberg 2020-08-21 Public domain in the USA. 152 Lowell, Percival 1855 1916 09031685 The Evolution of Worlds Produced by Paul Marshall, Tim Lindell and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) "The Evolution of Worlds" by Percival Lowell is a scientific publication written in the early 20th century. The work delves into the astronomical principles underlying the formation and development of solar systems, examining concepts such as the evolution of planets and the potential cataclysmic events that might influence them. It reflects Lowell's extensive background in astronomy, especially his previous studies on Mars. The opening of the book introduces the reader to the complexities of astronomy, challenging the notion that it is solely the study of visible celestial bodies. Lowell emphasizes the importance of understanding the invisible aspects of the cosmos, suggesting that every star might have unseen companions, especially focusing on the concept of dark stars and their potential effects. He discusses the logic behind their existence and relates how a star's lifecycle can lead to phenomena such as novas. Through examples from historical observations, such as those of Algol and Nova Persei, Lowell lays the groundwork for his arguments about cosmic evolution, preparing the stage for deeper exploration in subsequent chapters. (This is an automatically generated summary.) Reading ease score: 61.2 (8th & 9th grade). Neither easy nor difficult to read. en Cosmogony QB Text Category: Science - Physics 508964 2025-07-25T05:58:13.218740 text/html 475942 2024-10-18T05:20:42 text/html 5473474 2025-07-25T05:58:23.306718 application/epub+zip 5470615 2025-07-25T05:58:15.306738 application/epub+zip 228290 2025-07-25T05:58:14.261728 application/epub+zip 5602247 2025-07-25T05:58:28.231670 application/x-mobipocket-ebook 5557274 2025-07-25T05:58:22.165767 application/x-mobipocket-ebook 324033 2022-09-28T11:49:11.991651 application/x-mobipocket-ebook 378153 2025-07-25T05:58:11.619749 text/plain; charset=us-ascii 358196 2024-10-18T05:20:42 text/plain; charset=us-ascii 15897 2025-07-25T05:58:28.383652 application/rdf+xml 13871 2025-07-25T05:58:14.414722 image/jpeg 1667 2025-07-25T05:58:14.336720 image/jpeg 5842544 2025-07-25T05:58:13.462718 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