Space-time

Has the secret to understanding gravity been hiding in plain sight for nearly 50 years?

The theoretical physicist and best-selling author finds inspiration in politics and philosophy for rethinking space and time.

A team of mathematicians based in Vienna is developing tools to extend the scope of general relativity.

A new argument explores how the growth of disorder could cause massive objects to move toward one another. Physicists are both interested and skeptical.

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go to the ends of space and time to find a fix.

Quantum gravity could help physicists unite the currently incompatible worlds of quantum mechanics and gravity. In this episode, Monika Schleier-Smith discusses her pioneering experimental approach, using laser-cooled atoms to explore whether gravity could emerge from quantum entanglement.

Physicists discovered strange supersolids, constructed new kinds of superconductors, and continued to make the case that the cosmos is far weirder than anyone suspected.

Curious connections between physics and math suggest to Latham Boyle that space-time may survive the jump to the next theory of reality.

A decade after the discovery of the “amplituhedron,” physicists have excavated more of the timeless geometry underlying the standard picture of how particles move.