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Description
Welcome to the UniverseHere is the essential companion to Welcome to the Universe, a New York Times bestseller that was inspired by the enormously popular introductory astronomy course for non science majors, which Neil deGrasse Tyson, Michael A. Strauss, and J. Richard Gott taught together at Princeton. This problem book features more than one hundred problems and exercises used in the original course, ideal for anyone who wants to deepen their understanding of the
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 2468 reviews
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Product Reviews
★★★★★ 3
Fun dog toy
Set name: Yeti
Well constructed but the squeaker broke with an hour
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
So cute
Set name: Orangutan
My dog loves this toy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
★★★★★ 2
To Yeti or not to Yeti
Set name: Yeti, Set name: Yeti
I’m honestly baffled. My dog Simba — a boxer, black lab, pittie mix with plenty of energy but not exactly a super‑chewer — received this Yeti doll on February 15th. Within days, he had chewed the hand clean off and yanked the rope straight out of the doll’s body. I expected at least a little durability, but this thing didn’t stand a chance. I’m still staring at the shredded remains wondering how it fell apart that fast. Definitely not what I thought I was buying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
★★★★★ 3
Squeek Toy inside stopped after 25 minutes
Set name: Grizzly Bear
Squeezing toy inside lasted 25 minutes
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Big hit.
Set name: Orangutan, Set name: Orangutan
Our dogs love this guy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026
