SKU: 29707217443

The Orrery

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Description

The OrreryEdited by Caxton C. Foster Product Information: hardbound, 6 by 9 inches, 328 pages, 133 Illustrations An orrery is a mechanical device designed to demonstrate the rotation and orbital motion of the earth, and the orbital motion of the moon and the planets. The device was given the name orrery by its inventor, John Rowley, as a gesture of gratitude to the nobleman who employed him Charles Boyle, the fourth Earl of Orrery (16761731). The Orrey Computer

Edited by Caxton C. Foster

Product Information: hardbound, 6 by 9 inches, 328 pages, 133 Illustrations

An orrery is a mechanical device designed to demonstrate the rotation and orbital motion of the earth, and the orbital motion of the moon and the planets. The device was given the name orrery by its inventor, John Rowley, as a gesture of gratitude to the nobleman who employed him Charles Boyle, the fourth Earl of Orrery (1676–1731).

The Orrey — Computer Models of Astronomical Systems tells you how to exploit the power of the computer to model dozens of astronomical systems. Written in a conversational mode, it includes both the formulae and source code, in BASIC, (on disk) and executable files so you do not need a BASIC complier or runtime program to execute the programs. Subjects include: Simple Harmonic Motion, The Doppler Effect, Non-Spherical Masses in Orbit, Trojan Stability, Orbital Resonances, Ovendens Principle, Size Distributions of the Minor Planets, Global Positioning System, Gravitational Lenses, Harmonies Among the Stars, An Animated Analemma, Stability Zones, Solar Sailing, The Heliogyro, Building a Galaxy, Moon Phases, plus much, much more...

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SKU: 29707217443

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4.5 ★★★★★
Based on 27 reviews
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Gus
Bozeman, US
★★★★★ 5
Heavy chewer approved.
Style: Ball, Size: Medium (Pack of 1)
My pomsky will destroy a toy in minutes. Ropes, and the "indestructible" nylon type stuffs are no match for my furry shark. This ball has stood up to him like David. He loves the crunch and it is so much more tolerable than a squeaker. These will be a staple in his toy box - Chuckit toys are really the most durable dog toys I have found in three years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
G
Verified Purchase
Gold Coast
Whiting, US
★★★★★ 5
Fun Ball
Style: Ball, Size: Medium (Pack of 2)
Great new ball for our pup. He loves the sound of the crunch!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
C
Verified Purchase
Cheryl
Boise, US
★★★★★ 5
Durability
Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
S
Verified Purchase
ShainaKatt
Pawtucket, US
★★★★★ 5
Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
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Verified Purchase
waragon
Alexandria, US
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing. He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026

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