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From Einstein’s Theory to Gravity’s Chirp
The path from a revolutionary set of equations to the detection of gravitational waves was strewn with obstacles and controversy, explains the physicist Daniel Kennefick — and the struggle continues.
Gravitational Waves Discovered at Long Last
Ripples in space-time have been detected a century after Einstein predicted them, launching a new era in astronomy.
Quantum Weirdness Now a Matter of Time
Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links — not space-time — constitute the fundamental structure of the universe.
String Theory Meets Loop Quantum Gravity
Two leading candidates for a “theory of everything,” long thought to be incompatible, may be two sides of the same coin.
Visions of Future Physics
Nima Arkani-Hamed is championing a campaign to build the world’s largest particle collider, even as he pursues a new vision of the laws of nature.
Theories of Everything, Mapped
Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.
Interactive: What Is Space?
Imagine the fabric of space-time peeled back layer by layer.
How Quantum Pairs Stitch Space-Time
New tools may reveal how quantum information builds the structure of space.
Wormholes Untangle a Black Hole Paradox
A bold new idea aims to link two famously discordant descriptions of nature. In doing so, it may also reveal how space-time owes its existence to the spooky connections of quantum information.