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by Photo Researchers, Inc.
$45.00
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Challenge your brain with a jigsaw puzzle designed by an independent artist! Our puzzles are made from premium 0.2" thick paper stock and include a semi-gloss coating on the top surface to make the image pop. Puzzles are available in two different sizes, and each puzzle includes a puzzle box with the artwork printed on the top for safe storage when you're not puzzling. The puzzle pieces are unique shapes.
Design Details
Hipparchus in his observatory in Alexandria. In the center is an armillary sphere (spherical framework of rings, centered on Earth, that represent... more
Care Instructions
Store the puzzle in the provided box at room temperature with low humidity.
Ships Within
3 - 4 business days
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Hipparchus in his observatory in Alexandria. In the center is an armillary sphere (spherical framework of rings, centered on Earth, that represent lines of celestial longitude and latitude and other astronomically important features such as the ecliptic). Hipparchus (190-120 BC), was a Greek astronomer, geographer, and mathematician of the Hellenistic period. A methodical observer, Hipparchus compiled the first known star catalogue, listing some 850 stars, as well as their celestial coordinates and magnitude. His work profoundly influenced that of Ptolemy. He is considered the founder of trigonometry. Hipparchus is considered the greatest ancient astronomical observer. He was the first whose quantitative and accurate models for the motion of the Sun and Moon survive. He developed trigonometry and constructed trigonometric tables, and he solved several problems of spherical trigonometry. With his solar and lunar theories and his trigonometry, he may have been the first to develop a reli...
$45.00
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