Gravity Is a Mystery (Let's-Read-and-Find-Out Science 2)

Relativity in Modern Physics (Oxford Graduate Texts)

Black Hole Blues and Other Songs from Outer Space

Quantum Gravity in a Nutshell2: Beyond Hawking-The Cosmic Quest for a Quantum Theory of Gravity (Solutions to the Unsolved Physics Problems)

The Manga Guide to Relativity

The Little Book of Black Holes (Science Essentials)

How Einstein Created Relativity out of Physics and Astronomy (Astrophysics and Space Science Library, 394)

Beyond Einstein's Unified Field: Gravity & Electro-Magnetism Redefined

Introduction to Entropy

Covariant Loop Quantum Gravity: An Elementary Introduction to Quantum Gravity and Spinfoam Theory (Cambridge Monographs on Mathematical Physics)