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general relativity

<p>Can a fluid analogue of a black hole point physicists toward the theory of quantum gravity, or is it a red herring?</p>
quantum gravity

What Sonic Black Holes Say About Real Ones

Can a fluid analogue of a black hole point physicists toward the theory of quantum gravity, or is it a red herring?

<p>According to our best theories of physics, the universe is a fixed block where time only appears to pass.</p>
cosmology

A Debate Over the Physics of Time

According to our best theories of physics, the universe is a fixed block where time only appears to pass.

<p>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.</p>
Q&A

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.

<p>Ripples in space-time have been detected a century after Einstein predicted them, launching a new era in astronomy.</p>
astrophysics

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.

<p>The physical nature of computers might reveal deep truths about their uniquely powerful abstract abilities.</p>
Quantized Columns

The Physical Origin of Universal Computing

The physical nature of computers might reveal deep truths about their uniquely powerful abstract abilities.

<p>Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.</p>
Multimedia

Theories of Everything, Mapped

Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.

<p>By replacing black holes with fuzzballs — dense, star-like objects from string theory — researchers think they can avoid some knotty paradoxes at the edge of physics.</p>
Physics

The Fuzzball Fix for a Black Hole Paradox

By replacing black holes with fuzzballs — dense, star-like objects from string theory — researchers think they can avoid some knotty paradoxes at the edge of physics.

<p>Imagine the fabric of space-time peeled back layer by layer.</p>
The Quantum Fabric of Space-Time

Interactive: What Is Space?

Imagine the fabric of space-time peeled back layer by layer.

<p>New tools may reveal how quantum information builds the structure of space.</p>
The Quantum Fabric of Space-Time

How Quantum Pairs Stitch Space-Time

New tools may reveal how quantum information builds the structure of space.