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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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4.8 ★★★★★
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Product Reviews
★★★★★ 5
Fun for our puppies
Color: brown1
Fun tug of war toy for our heeler pups. They haven't destroyed it yet but time will tell. Cute, and easy to take with us to the park.
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Reviewed in the United States on June 10, 2026
★★★★★ 4
Dog toy for heavy chewers
Color: brown1
This is pretty durable. My puppy chews up most stuffed toys. This one is still mostly intact. It’s missing one ear and the tail but the way it was sewn it’s still very usable. It’s one of his favorite toys
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Reviewed in the United States on January 7, 2026
★★★★★ 5
Great dog toy! Good quality!
Color: brown1
Great quality dog toy! The rope is thick and not easy to break. Fun toy for my medium-sized dog who loves to tug-of-war with me.
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Reviewed in the United States on December 30, 2025
★★★★★ 3
For small dog
Color: brown4, Color: brown4
It's cute for the price, but it's meant for small dogs, it's very easy for medium-sized dogs to destroy.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Small Pug Enjoyment For All!
Color: brown1, Color: brown1
We got this toy to replace an earlier purchase for a rope/squeak toy after finding he loved a holiday purchase by an Aunt which squeaked but was not really meant for tugging/heavy playing like he wanted too, for our half pug/schnauzer Mr. Pug. Compared to the first toy and the attempted replacement he ADORES this toy! As you can see in the above picture he has truly laid his claim to it!
About the product in general though, we found it surprisingly sturdy all around, even with heavy tugging and aggressive play. The interior padding is durable it seems, and holes where the rope come out have a heavy duty padding for the target dog audience like ours in preventing him from chewing or tearing it up. The crinkly ears were also an enjoyable surprise for him, and the squeaker can move around the torso area of the toy keeping him actively looking for it when he desires it.
All in all we would certainly get another toy like this in the future.
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Reviewed in the United States on January 25, 2025