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gravity

One of the world’s preeminent theoretical physicists seeks a quiet place to think.
Thinking Places

Juan Maldacena, Pondering Quantum Gravity by the Pond

One of the world’s preeminent theoretical physicists seeks a quiet place to think.

The newly developed theory of emergent gravity, proposed as an alternative to dark matter, struggles in one of its first trials.
Abstractions blog

Researchers Check Space-Time to See if It’s Made of Quantum Bits

The newly developed theory of emergent gravity, proposed as an alternative to dark matter, struggles in one of its first trials.

Recent calculations tie together two conjectures about gravity, potentially revealing new truths about its elusive quantum nature.
quantum gravity

Where Gravity Is Weak and Naked Singularities Are Verboten

Recent calculations tie together two conjectures about gravity, potentially revealing new truths about its elusive quantum nature.

The physicist who designed the LIGO experiment that detected gravitational waves still holes up in a small basement lab surrounded by electronics and optical instruments.
Thinking Places

Rainer Weiss, Remembering the Little Room in the Plywood Palace

The physicist who designed the LIGO experiment that detected gravitational waves still holes up in a small basement lab surrounded by electronics and optical instruments.

A different kind of dark matter could help to resolve an old celestial conundrum.
dark matter

Dark Matter Recipe Calls for One Part Superfluid

A different kind of dark matter could help to resolve an old celestial conundrum.

A proposed theory of gravity does away with dark matter, even as new astrophysical findings challenge the need for galaxies full of the invisible mystery particles.
gravity

The Case Against Dark Matter

A proposed theory of gravity does away with dark matter, even as new astrophysical findings challenge the need for galaxies full of the invisible mystery particles.

Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.
astrophysics

Colliding Black Holes Tell New Story of Stars

Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.

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?
astrophysics

After Black Holes Collide, a Puzzling Flash

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?

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.
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.