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Description
A History of Astronomy from Thales to KeplerThis is the only detailed history of early astronomy available in English. Formerly published under the title History of the Planetary Systems from Thales to Kepler, it is recognized as a masterpiece of both historical insight and scientific accuracy. Beginning with the astronomical ideas of the ancient Egyptians, Babylonians, and pre philosophic Greeks (Homer and Hesiod), it moves up through Thales, Anaximander, Anaximenes, Xenophanes, Parmenides,
This is the only detailed history of early astronomy available in English. Formerly published under the title History of the Planetary Systems from Thales to Kepler, it is recognized as a masterpiece of both historical insight and scientific accuracy.Beginning with the astronomical ideas of the ancient Egyptians, Babylonians, and pre-philosophic Greeks (Homer and Hesiod), it moves up through Thales, Anaximander, Anaximenes, Xenophanes, Parmenides, Heraclitus, Empedocles, Democritus, and other early Greek cosmologists. The Pythagoreans are considered next, with their occasionally remarkable anticipations of modernity, and then Plato's astronomical thought. The enormously important system of concentric spheres for planets, usually associated with Eudoxus, is described in detail, followed by a discussion of Aristotle, Heraclides, and Aristarchus. The theory of epicycles -- which held for almost 2,000 years -- is then considered, with chapters on the dimensions of the world and the finished Ptolemaic system.
Medieval European and Islamic cosmologies are then described in detail. Nicolas of Cusa, Regiomontanus, Calcagnini, and other transitional figures from the Middle Ages to the Renaissance are then followed by detailed chapters on Copernicus, Tycho Brahe, and Kepler.
"Standard reference on Greek astronomy and the Copernican revolution." -- Sky and Telescope.
"A classical book in the field of the history of astronomy."-- Philosophy and Science.
Binding Type: Paperback
Publisher: Dover Publications
Published: 12/08/2011
ISBN: 9780486600796
Pages: 464
Weight: 0.97lbs
Size: 7.97h x 5.44w x 0.92d
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★★★★★ 5
Great toy for aggressive chewers
Color: Purple & Blue
My dog loves this!
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Reviewed in the United States on June 12, 2026
★★★★★ 5
Good chew toy
Color: Purple & Blue
Our golden retrievers love these. They last awhile too
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Dog toy is tough and durable
Color: Blue&Red Fish
It’s great for aggressive chewers, my pittbull loves it
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Reviewed in the United States on May 2, 2026
★★★★★ 1
Our dogs hurt their mouths chewing these bones
Color: Purple & Blue
I don't do a lot of reviews because I realize many are objective opinions. However, in this case I felt it was necessary to warn others. Our dogs are aggressive chewers. Their last rubber bones (not these) which we've purchased before, and recently purchased again, were destroyed quickly. Chunks of rubber came off the ends. Since those didn't hold up like they used to, I found these harder bones hoping they would last longer. They were able to gnaw into the hard plastic within a few minutes. This created sharp edges that cut their mouths. When I saw a bit of blood on the bones, I took them away from the dogs and threw them away. I wondered why they quit chewing on them after being so excited at first. Also, these are hard enough to damage a tooth.
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Reviewed in the United States on December 6, 2025
★★★★★ 2
Pups have shown zero interest in these toys….
Color: Purple & Blue
I would agree that these are indestructible being neither of my dogs have shown any interest in these at all. At this rate they should last forever…
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Reviewed in the United States on April 10, 2026
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