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4.5 stars

Really loved this

An entertaining, accessible, and absorbing read which makes astrophysics more easily understood and contemplated by the rest of us mere mortals.
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This book explores advanced physics through the lens of what could go wrong. What will destroy everything? Not just the world (which will be destroyed when our Sun explodes, that one's easy) but the entire universe? 

This book isn't just an article explaining that, because the shortest answer is, it depends. As Mack digs into what it depends on, it ends up we know a lot about physics! And also, there are a lot of fundamental things we don't know... yet. Katie Mack also goes into all (most? many?) of the ways that scientists were trying to find those things, as of the time of the writing. 

No math is used in explaining the concepts. In spite of that, I felt that the ideas were understandable in broad terms, though not always easy. This book is a nice review and update for a former science student like me, and I think it would be a good warm-up and context for advanced physics coursework and a good primer for journalists covering advanced physics. It has some interesting possibilities for science fiction (and/or existential horror) prompts as well. 

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I loved it and wrote a brief plug here:

https://booklifebycolleen.blogspot.com/2021/06/quickie-its-end-of-world-as-we-know-it.html

Five stars for the parts I understood, three stars for the parts I couldn't. Great book, but got real deep, real fast. Katie Mack does have a great writing style that made astrophysics fairly digestible for the common person.