This scientist is the alphabetically latter of the two who name a proposal that states that a certain wave function satisfies the Wheeler-DeWitt equation. That no-boundary assumption is named after this scientist and James Hartle. The existence of a mathematical construct by Wilhelm Killing is implied by this scientist’s namesake strong rigidity theorem. This man is the alphabetically former of two who name a set of theorems that prove the (*) geodesic completeness of Lorentzian manifolds; those singularity theorems are named after this scientist and Roger Penrose. (10[1])The release of energy outside a black hole’s event (10[1])horizon (10[1])is this man’s namesake “radiation.” (-5[1])For 10 points, name this English physicist who famously wrote A Brief History of Time. ■END■ (10[1])