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gravity

Dark matter superfluid
dark matter

Dark Matter Recipe Calls for One Part Superfluid

June 13, 2017

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

Erik Verlinde by Ilvy Njiokiktjien for Quanta Magazine
gravity

The Case Against Dark Matter

November 29, 2016

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.

astrophysics

Colliding Black Holes Tell New Story of Stars

September 6, 2016

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

astrophysics

After Black Holes Collide, a Puzzling Flash

March 2, 2016

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

February 18, 2016

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

February 11, 2016

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