SKU: 33679186048

The Nature of Space and Time

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The Nature of Space and TimeEinstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united into a single quantum theory of gravity? Can quantum and cosmos ever be combined? In The Nature of Space and Time, two of the world's most famous physicists Stephen Hawking (A Brief

Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united into a single quantum theory of gravity? Can quantum and cosmos ever be combined? In The Nature of Space and Time, two of the world's most famous physicists--Stephen Hawking (A Brief History of Time) and Roger Penrose (The Road to Reality)--debate these questions.

The authors outline how their positions have further diverged on a number of key issues, including the spatial geometry of the universe, inflationary versus cyclic theories of the cosmos, and the black-hole information-loss paradox. Though much progress has been made, Hawking and Penrose stress that physicists still have further to go in their quest for a quantum theory of gravity.



Binding Type: Paperback
Publisher: Princeton University Press
Published: 09/22/2015
ISBN: 9780691168449
Pages: 160
Weight: 0.35lbs
Size: 8.40h x 5.50w x 0.50d
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SKU: 33679186048

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Lowell, US
★★★★★ 5
Great for the price and the rhinestones add the extra pop.
Size: 2 Big Kid, Color: White/Rhinestones
My 7yo loves them. They appear well made and fit as expected. I saw some reviews of them being too big but no issues here. She’s worn them everyday for a week and she said they are comfortable. Color matches description and the rhinestones add the “extra sparkle” she loves. They did get some mud on them at recess but it was easy to clean off. Overall, no complaints for the price.
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Reviewed in the United States on October 3, 2025
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Boise, US
★★★★★ 5
Great shoe
Size: 5 Big Kid, Color: White/Rhinestones
Price is right, attractive looking shoe
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Reviewed in the United States on June 9, 2026
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Lord Prince
Dallas, US
★★★★★ 5
Inexpensively Cute, Resilient and Durable...
Size: 5 Big Kid, Color: Purple, Size: 5 Big Kid, Color: Purple
Purchased these cheap mesh-like breathable, high quality light-weight canvas material non-reputable, off-brand name sneakers for my stepdaughter because her puma sneakers were wet. My daughter loves them; not only are they her favorite color, she says they're very comfortable and easy to put on. They're easy to put on, with a slip on style and also have tie up for a tighter fit. My daughter also says likes the purple in-sole bubble that looks like a real air bubble but its really hard plastic volcanized to give a nice polished purple color finish. My daughter is happy with them, so I am too. They're well worth the practical cost, I look forward to them lasting a growth period of approximately six months to a year. Highly recommended. Pick you child's favorite color! You'll be happy you did...
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Reviewed in the United States on April 30, 2025
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New York, US
★★★★★ 4
Worth the buy so far!
Size: 4 Big Kid, Color: Gradient Blue
So far my child lives this shoes. They are comfortable and stylish for her!
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Reviewed in the United States on April 5, 2026
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Omaha, US
★★★★★ 5
Great shoes!! Love them!
Size: 12 Little Kid, Color: Gradient Blue
Greta shoes! Perfect for growing kids! True to size! My 5 year old loves them and they hold up great! She's hard on shoes! Lightweight and durable materials.
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Reviewed in the United States on May 9, 2026

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