An Introduction to Einstein's General Relativity
by James B. Hartle
Recommended by Brian Cox
Check price on AmazonProof-backed recommendation
Amazon availability
Recommended by 2 sources and appears in Physics, Most Recommended Books, and Science.
The aim of this groundbreaking new text is to bring general relativity into the undergraduate curriculum and make this fundamental theory accessible to all physics majors. Using a "physics first" approach to the subject, renowned relativist James B. Hartle provides a fluent and accessible introduction that uses a minimum of new mathematics and is i...
Check formats, pricing, and current availability directly.
Why recommended
Recommended by 2 sources and appears in Physics, Most Recommended Books, and Science.
People and public figures who have recommended this book.
Recommendation proof is sourced from public posts, interviews, reading lists, and cited references.
Brian Cox
“(1) is easy there are two components, but for distant galaxies the socalled ‘proper motion’ is negligible. (2) You need a little GR. Look up cosmological redshift. The best intro text book in my view is Hartle the calculation is in section 18.2.”
Check formats, pricing, and availability options directly on Amazon.

Consider Accidental Presidents by Jared Cohen. Recommended by 10 sources.
“Accidental Presidents offers eight narrative portraits of men who succeeded to the U.S. presidency without election, using anecdote-rich scenes and readable context to show how personality and circumstance interact with office power. It’s strongest as a set of self-contained stories that make succession stakes concrete for non-specialist readers; it does not prioritize dense archival argument or exhaustive methodology, so expect some interpretive generalizations and repeated themes across cases. Use it for fast historical orientation rather than scholarly deep-dives.”
Each recommendation is collected from a public source — interviews, articles, or curated lists — and linked to its original URL. Books with many verifiable recommendations from respected people rank higher.