Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. This map of the solar system from 1849 may look a little different from what you re used to! The planets Neptune and ...

As was to be expected of one who is himself above all a diligent observer, Dr. Steavenson has written a book in which the actual appearance of the heavens is given considerable prominence. The last ...

Chapter I: Introduction: the dawn of astronomy -- Chapter II: The earth -- Chapter III: Tools and methods -- Chapter IV: The sun -- Chapter V: The moon -- Chapter VI: Eclipses and tides -- Chapter VII ...