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gravity

Space

The problem of cosmic inflation and how to solve it

One of the best-performing models in cosmology is also one with the least physical rationale behind it. Columnist Leah Crane says this leaves us with a puzzle that could make or break physics as we know it

Comment

NIST scientists Stephan Schlamminger (left) and Vincent Lee examine the torsion balance they used to measure the gravitational constant, big G

Physics

Gravity's strength measured more reliably than ever before

News

Physics

The stunning physics of Project Hail Mary go back to ancient China

Comment

Astronaut running during sunset at a remote planet

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How working out like an astronaut can reduce back pain and slow ageing

Features

The experiments that could finally explain gravity

Video

The experiments that could finally explain gravity

Video

Are we living in a simulation? This experiment could tell us

Physics

Are we living in a simulation? This experiment could tell us

Features

An artwork made my layering many paper cutouts, showing an astronaut near a black hole. Within the black hole are colourful swirls, stars and specks

Physics

Black hole entropy hints at a surprising truth about our universe

Features

A new understanding of causality could fix quantum theory’s fatal flaw

Physics

A new understanding of causality could fix quantum theory’s fatal flaw

Features

Space

Lumpy ‘caterpillar wormholes’ may connect entangled black holes

News

No space, no time, no particles: A radical vision of quantum reality

Physics

No space, no time, no particles: A radical vision of quantum reality

If we admit that quantum numbers are the true essence of reality – not particles, space or time – then a surprising and beautiful new vision of reality opens up to us

Features

Physics

Could gravity produce quantum entanglement if it’s not fully quantum?

News

Physics

The 30-year fight over how many numbers we need to describe reality

Features

Physics

Is gravity a new type of force that arises from cosmic entropy?

Features

Physics

Laws of quantum physics may rule out a universe that came before ours

News

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