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Atomic clock

Physics

The most precise atomic clock ever made is a cube of quantum gas

The best atomic clock will only be out of sync 3.5 times in every 10 quintillion ticks. It could help test general relativity and hunt for gravitational waves

News

Diagram showing three-body system

Space

The cosmic dance of three dead stars could break relativity

News

Astronomer looking through telescope

Space

Time to embrace our odd place in the cosmos, inside a huge void?

Comment

Black hole

Space

Quantum effects cloak impossible singularities with black holes

News

atomic clock

Technology

Atomic clocks make best measurement yet of relativity of time

News

string artwork

Physics

The string-loop theory that might finally untangle the universe

Features

The LIGO detector site in Livingston, Louisiana

Space

Gravitational wave detector prepares to peer into bizarre stars

News

A crystal

Physics

World’s first time crystals cooked up using new recipe

News

Plasma tidal wave may tell us if black holes destroy information

Space

Plasma tidal wave may tell us if black holes destroy information

News

Light-speed camera snaps light's

Technology

Light-speed camera snaps light's "sonic boom" for the first time

A camera system that mimics a beam of light breaking its own speed limit could find uses in everything from medical imaging to astronomy

News

Space

First test of rival to Einstein's gravity kills off dark matter

News

Space

Gravity may have chased light in the early universe

News

Physics

Classic quantum experiment could conceal theory of everything

News

Space

The universe is flat as a pancake, and we don't understand why

Features