Robert S. Ball Libros

First published in 1909, this classic science fiction novel tells the story of a man who travels to the moon and falls in love with a lunar princess. With its imaginative plot and romantic themes, Time and Tide remains a beloved work of early sci-fi.

This classic work provides a thorough introduction to the principles of spherical astronomy. It covers the geometry of celestial spheres, the motion of celestial bodies, and the methods of measuring astronomical phenomena. A must-read for anyone interested in the history of science and astronomy.