Summary of Jeffrey Bennett's What Is Relativity?

Please note: This is a companion version & not the original book.

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#1 The goal of this book is to show you why black holes don’t suck. -> The goal of this book is to show you why black holes don’t suck. You can’t understand what black holes are unless you first understand the basic ideas discovered by Einstein.

#2 You can’t understand what black holes are unless you first understand the basic ideas discovered by Einstein.

#3 If you’re going to visit a black hole, the first step is to find one. You might think that would be difficult, since the term black hole suggests something that would be invisible against the blackness of space. However, all black holes are also very massive, and they can be detected by their gravitational influence on their surroundings.

#4 Einstein’s theory of general relativity predicts that black holes don’t suck. In fact, they are the remains of high-mass stars that have died, and they are usually in binary systems with still-living stars.

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