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Description
Time Travel and Warp Drives: A Scientific Guide to Shortcuts Through Time and SpaceTo see video demonstrations of key concepts from the book, please visit this website: http: www. press. uchicago. edu sites timewarp Sci fi makes it look so easy. Receive a distress call from Alpha Centauri? No problem: punch the warp drive and you're there in minutes. Facing a catastrophe that can't be averted? Just pop back in the timestream and stop it before it starts. But for those of us not lucky enough to live in a science fictional universe,
To see video demonstrations of key concepts from the book, please visit this website: http: //www.press.uchicago.edu/sites/timewarp/
Sci-fi makes it look so easy. Receive a distress call from Alpha Centauri? No problem: punch the warp drive and you're there in minutes. Facing a catastrophe that can't be averted? Just pop back in the timestream and stop it before it starts. But for those of us not lucky enough to live in a science-fictional universe, are these ideas merely flights of fancy--or could it really be possible to travel through time or take shortcuts between stars? Cutting-edge physics may not be able to answer those questions yet, but it does offer up some tantalizing possibilities. In Time Travel and Warp Drives, Allen Everett and Thomas A. Roman take readers on a clear, concise tour of our current understanding of the nature of time and space--and whether or not we might be able to bend them to our will. Using no math beyond high school algebra, the authors lay out an approachable explanation of Einstein's special relativity, then move through the fundamental differences between traveling forward and backward in time and the surprising theoretical connection between going back in time and traveling faster than the speed of light. They survey a variety of possible time machines and warp drives, including wormholes and warp bubbles, and, in a dizzyingly creative chapter, imagine the paradoxes that could plague a world where time travel was possible--killing your own grandfather is only one of them Written with a light touch and an irrepressible love of the fun of sci-fi scenarios--but firmly rooted in the most up-to-date science, Time Travel and Warp Drives will be a delightful discovery for any science buff or armchair chrononaut.Binding Type: Paperback
Publisher: University of Chicago Press
Published: 04/09/2013
ISBN: 9780226045481
Pages: 268
Weight: 1.10lbs
Size: 8.90h x 6.00w x 0.60d
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4.6 ★★★★★
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Product Reviews
★★★★★ 5
Perfect Toy for the Picky Dogs!
Color: Squirrels (3-pack)
These are replacement squirrels. I had these for my own dogs. When I noticed how much enjoyment they got out of them, I purchased them as gifts.
My brother’s 20 lb dog is so picky, but I took a chance. The squirrel toys are the only ones he plays with. According to my brother, his dog ignores treats and toys, but loves the squirrels.
A friend of mine said the same thing. She also has small dogs, 25 lb & 30 lb. They preferred the squirrels.
This toy is not for big dogs. Unless they’re gentle, they will probably be torn apart very quickly.
They are very easy to chew on, the squeak isn’t loud, there’s no smell and very entertaining!
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Reviewed in the United States on November 20, 2025
★★★★★ 5
Dog Approved
Color: Squirrels (3-pack)
The toys are soft but well made, and my dog really likes that they squeak. He loves carrying them around and hunting for them when I hide them.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Super Sturdy with hours of fun.
Color: Wild Duck, Hare, Squirrel & Alligator, Size: Small
I got the small ones that you cannot put a water bottle in.
These toys have held up way better than expected. I am dog sitting a very rough with toys dog named Chunk. He tears up ever. Single. Toy my dog (Ted) has.
I bought new ones just for chunk. These appealed to me with the no stuffing, They were cheaper, and have a squeaker. Everything chunk needed. They arrived on time and I thought I wasted my money. They were super soft, like too soft. They felt flimsy and weak. Like 5 minutes with chunk and they be dead. 2 hours with my dog and they would have a rip. So far 2 of them (I set two out) have lasted the whole weekend. The bunny looks very rough and disgusting, but no rips, the squeakers still work, and no random fluff everywhere. I am going to wash the bunny once chunk leaves.
My very careful doggo Ted loves them too. He throws them up in the air and catches them, plays tug of war with them, and no rips. They are super sturdy. He can’t wait until Chunk leaves (chunk is 2 and Ted is 12-13) so he can play with them.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Loved it
Color: Brown/Wild Duck, Size: Large, Color: Brown/Wild Duck, Size: Large
He loved it so much, he destroyed it so we ordered another.
I didn't realize that you can stick an empty water bottle inside.
Again, the first one didn't last long, but he enjoyed it
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Very fun interactive toy
Color: Brown/Wild Duck, Size: Medium
This toy is very versatile. There's no stuffing yet it's very soft so it can be used as a tug toy. It also makes for a fun fetch toy because it has a cavity to put a water bottle. It gives your dog something that crinkles and can be pierced when bitten and easily replaced with another empty bottle whenever necessary.
That is what really makes this toy the standout of all the ones offered by Best Pet imo. I don't expect this to last forever but once my pup gets bigger we'll probably get the large size for her because there's not too many all in one fetch and tug toys at an affordable price.
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Reviewed in the United States on May 15, 2026