Explore / Physics
1,842 explorers / 3 open questions / 312 papers
Cathedral separates the established mechanism, the historical contribution chain, and the unresolved assumptions so each can be inspected independently.
Known nodes connect to ghost nodes where questions remain open.
Credit follows documented contributions. Open questions remain attached to the historical path rather than being presented as context-free prompts.
1972
Black-hole area and thermodynamics become linked through entropy.
Bekenstein argued that black holes possess entropy proportional to horizon area, giving later radiation calculations a thermodynamic target.
Jacob Bekenstein
Theoretical physicist who connected black-hole area with entropy, preparing the thermodynamic framework for Hawking radiation.
1974
Quantum particle emission from black holes is announced.
Hawking reported that quantum effects make black holes emit particles.
Stephen Hawking
Theoretical physicist who derived black-hole particle emission and made the information problem unavoidable.
1975
The curved-spacetime derivation of black-hole radiation is published.
The detailed calculation connected surface gravity, temperature, and particle creation.
Stephen Hawking
Theoretical physicist who derived black-hole particle emission and made the information problem unavoidable.
Open questions
Ghost nodes
How is information preserved in a complete quantum description of black-hole evaporation?
Stephen Hawking / 0 active
The tension between semiclassical evaporation and unitary quantum evolution remains unresolved at the level of a complete, experimentally grounded theory.
Evidence trail: Breakdown of predictability in gravitational collapseopenWhat observable signature could discriminate competing microscopic accounts of Hawking radiation?
Stephen Hawking / 0 active
Analogue systems test aspects of the kinematics, but direct astrophysical discrimination remains open.
Evidence trail: Particle creation by black holes