Finally, the book applies GR to the universe as a whole—Friedmann models, the Big Bang, and the cosmological constant. Given that later editions were published after the discovery of cosmic acceleration, these sections are relatively modern.
If you want a modern, coordinate-free, differential-geometric approach (like Carroll or Wald), this is not the right book. Ohanian uses geometry minimally; some readers find this old-fashioned. ohanian gravitation and spacetime pdf
Since its first edition in 1976, has occupied a unique and vital niche. It is the textbook that dares to be different. It emphasizes physical reasoning over pure formalism, experimental verification over mathematical abstraction, and a clear, linear narrative over an encyclopedic reference. Finally, the book applies GR to the universe
He closed his copy of MTW.