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space-time

string theory

The Strange Second Life of String Theory

By K.C. Cole
September 15, 2016
Read Later

String theory has so far failed to live up to its promise as a way to unite gravity and quantum mechanics. At the same time, it has blossomed into one of the most useful sets of tools in science.

astrophysics

Colliding Black Holes Tell New Story of Stars

By Natalie Wolchover
September 6, 2016
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Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.

Quantized Columns

How Feynman Diagrams Almost Saved Space

By Frank Wilczek
July 5, 2016
Read Later

Richard Feynman’s famous diagrams weren’t just a way to do calculations. They represented a deep shift in thinking about how the universe is put together.

Abstractions blog

LIGO Reports Second Black-Hole Merger

By Natalie Wolchover
June 15, 2016
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The spokesperson for the Laser Interferometer Gravitational-Wave Observatory called it “a promising start to mapping the populations of black holes in our universe.”

astrophysics

After Black Holes Collide, a Puzzling Flash

By Kevin Hartnett
March 2, 2016
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A satellite spotted a burst of light just as gravitational waves rolled in from the collision of two black holes. Was the flash a cosmic coincidence, or do astrophysicists need to rethink what black holes can do?

Q&A

From Einstein’s Theory to Gravity’s Chirp

By Natalie Wolchover
February 18, 2016
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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.

astrophysics

Gravitational Waves Discovered at Long Last

By Natalie Wolchover
February 11, 2016
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Ripples in space-time have been detected a century after Einstein predicted them, launching a new era in astronomy.

quantum physics

Quantum Weirdness Now a Matter of Time

By George Musser
January 19, 2016
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Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links — not space-time — constitute the fundamental structure of the universe.

Physics

String Theory Meets Loop Quantum Gravity

By Sabine Hossenfelder
January 12, 2016
Read Later

Two leading candidates for a “theory of everything,” long thought to be incompatible, may be two sides of the same coin.


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