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The Evolution of Worlds by Percival Lowell 1909

Percival Lowell attempted to trace the evolution of the planets in our Solar System in this volume. He started with the belief, which was common at the time, that the spiral nebulae were solar systems within the Milky Way that were in the process of forming. We now know that these spiral nebulae are actually galaxies like our Milky Way. When Percival Lowell discusses the planet Venus he presented observations that he made using the 24 inch refractor of the Lowell observatory that revealed linear features on Venus. We now know that the linear features that Percival Lowell observed were probably images of the blood vessels within his own eyes, since he was stopping the 24 inch refractor down to just a few inches.