What the Olbers' paradox asks — why is the night sky dark if there are infinite stars (answer: finite age of universe)

What the Penrose-Hawking singularity theorems prove — singularities are inevitable in general relativity under certain conditions

Theorems assert black holes and singularities arise from gravitational collapse in spacetime

What the Many-Worlds interpretation claims — all outcomes occur in branching parallel universes, no collapse

Many-Worlds posits simultaneous existence of all possible outcomes in separate, non-interacting universes

Why nothing with mass can reach the speed of light — the Lorentz factor γ diverges as v approaches c

As velocity v approaches c, Lorentz factor γ increases, preventing massive objects from reaching light speed

What the cosmological constant problem is — quantum field theory predicts vacuum energy 10^120 times too large

Quantum field theory overestimates vacuum energy by 10^120 times, causing the cosmological constant problem

Why special relativity doesn't need the luminiferous aether — the Michelson-Morley null result becomes expected

Special relativity's framework negates aether's need, as light's speed is invariant, aligning with Michelson-Morley's findings

What the arrow of time problem asks — why does time have a direction when fundamental laws are time-reversible

The arrow of time problem questions why entropy increases in one direction despite time-reversible laws