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- Richard O. Hansen (Geroch–Hansen stationary relativistic multipole moments, Ashtekar–Hansen conformal completion),
- B. Kent Harrison (gravitational collapse, solution generating methods),
- James Hartle (quantum cosmology, textbook),
- Stephen W. Hawking (singularity theorems, Hawking radiation, monograph),
- Charles W. Hellaby (cosmological models),
- David Hilbert (variational principle),
- Cornelius Hoenselaers (solution generating methods, monograph)
- Banesh Hoffmann (EIH approximation),
- Fred Hoyle (maverick models),
- Russell Hulse (Hulse/Taylor pulsar),
Read more about this topic: Contributors To General Relativity