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Description
Time Travel in Einstein's Universe: The Physical Possibilities of Travel Through TimeTime travel in Newton's universe was inconceivable, but in Einstein's universe it has become a possibility. Now, a Princeton astrophysicist gives readers a guided tour of the potential of traveling through time. Line drawings. Binding Type: Paperback Publisher: Mariner Books Published: 09 19 2002 ISBN: 9780618257355 Pages: 304 Weight: 0. 80lbs Size: 8. 40h x 5. 40w x 0. 80d Review Citations: Discover 09 01 2004 pg. 89
Time travel in Newton's universe was inconceivable, but in Einstein's universe it has become a possibility. Now, a Princeton astrophysicist gives readers a guided tour of the potential of traveling through time. Line drawings.Binding Type: Paperback
Publisher: Mariner Books
Published: 09/19/2002
ISBN: 9780618257355
Pages: 304
Weight: 0.80lbs
Size: 8.40h x 5.40w x 0.80d
Review Citations: Discover 09/01/2004 pg. 89
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4.4 ★★★★★
Based on 740 reviews
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Product Reviews
★★★★★ 5
My Golden Retriever’s favorite
We’ve owned lots of toys and balls. This specific version (in blue) has been her absolute favorite. She’s about 72lbs and chews on this thing regularly with no visible damage. We actually own about 6 of them because they have a tendency to go missing underneath furniture and in the yard. We have two of the orange colored ones but she doesn’t like those nearly as much which I assume is because the blue is easier to see in the grass.
Other than that…They bounce really well and also whistle a little when you throw them hard enough. I hope they never stop making these.
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Reviewed in the United States on October 6, 2024
★★★★★ 4
doesn't whistle as loud as other chuckit balls I've seen, but a good ball.
makes some noise, but I've seen (and played with) others at the dog park that whistle much louder than the 1 I got. all Chuckit balls... so, just this one I'm betting.
but it flys good and the dog loves to chase it.
he chews it a fair bit as well and the ball has not taken much damage from him (lab mix) or others that have had a go at it.
I'll likely buy another at some point ... just wish it was a little louder when flying.
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Reviewed in the United States on November 4, 2025
★★★★★ 5
Blue ball, my dog likes blue.
Just a ball right? Evidently not! My dog won’t chase an orange chuck it ball or the glow in the dark ball- only the blue one 🤷🏼♀️
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Reviewed in the United States on May 9, 2025
★★★★★ 3
I wanted a blue ball
It's great. It just wasn't blue.
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Reviewed in the United States on January 5, 2026
★★★★★ 5
its a great ball
works well
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Reviewed in the United States on July 8, 2025
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