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# fundamental physics

## Latest Articles

### A New Experiment Casts Doubt on the Leading Theory of the Nucleus

By measuring inflated helium nuclei, physicists have challenged our best understanding of the force that binds protons and neutrons.

### How to Think About Relativity

Albert Einstein’s ideas about space-time aren’t exactly intuitive, and they aren’t exactly Einstein’s, either.

### Pondering the Bits That Build Space-Time and Brains

Vijay Balasubramanian investigates whether the fabric of the universe might be built from information, and what it means that physicists can even ask such a question.

### Massive Black Holes Shown to Act Like Quantum Particles

Physicists are using quantum math to understand what happens when black holes collide. In a surprise, they’ve shown that a single particle can describe a collision’s entire gravitational wave.

### A Deepening Crisis Forces Physicists to Rethink Structure of Nature’s Laws

Physicists are reexamining a longstanding assumption: that big stuff consists of smaller stuff.

### Gravitational Waves Should Permanently Distort Space-Time

The “gravitational memory effect” predicts that a passing gravitational wave should forever alter the structure of space-time. Physicists have linked the phenomenon to fundamental cosmic symmetries and a potential solution to the black hole information paradox.

### How Gravity Is a Double Copy of Other Forces

An enigmatic connection between the forces of nature is allowing physicists to explore gravity’s quantum side.

### How to Rewrite the Laws of Physics in the Language of Impossibility

Chiara Marletto is trying to build a master theory — a set of ideas so fundamental that all other theories would spring from it. Her first step: Invoke the impossible.

### The Quantum Theory That Peels Away the Mystery of Measurement

A recent test has confirmed the predictions of quantum trajectory theory.