http://book.klll.cc/ebooks/subject/26909.opds 2025-08-07T20:35:00Z Books about Jupiter (Planet) -- Satellites (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-07T20:35:00Z https://book.klll.cc/ebooks/46036.opds The sidereal messenger of Galileo Galilei : and a part of the preface to Kepler's Dioptrics containing the original account of Galileo's astronomical discoveries Galileo Galilei and Johannes Kepler