In “A Brief History of Time,” first published in 1988, the British physicist Stephen Hawking explained how space and time are connected, interwoven, interdependent with each other. Since the universe ...

For more than a century, physics has treated space and time as the smooth stage on which the universe unfolds, a flexible fabric that bends but never breaks. A new wave of theories is now challenging ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

Quantum mechanics has always carried a quiet tension. At its core, the theory allows particles to exist in many states at ...