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Impression of a black hole merger

Black hole that 'rings' like a bell shows Einstein was right

16 September 2019

Astronomers have looked at the way a black hole 'rings' like a bell to test a prediction of Einstein’s general relativity. Turns out Einstein is still right


Two black holes

Puzzling signals seen by LIGO may be gravitational wave split in two

29 August 2019

LIGO detected two gravitational waves coming from the same area on the same day. This unusual event may have been caused by the same wave splitting in two


Welcome to the 5th dimension: Our universe's radical new fate

Welcome to the 5th dimension: Our universe's radical new fate

17 July 2019

Our best models of cosmology suggest the universe will either go on forever, implode or rip itself apart. A new proposal suggests an even weirder destiny


General_relativity

General relativity

14 June 2019

General relativity is one of two pillars of modern physics – our working theory of gravity and of the very large, of planets, galaxies and the universe as a whole


Black holes

Black holes

12 June 2019

Black holes are objects with an intense gravitational pull so strong that not even beams of light, the fastest things in the universe, can escape. This makes them impossible to see directly, and so astronomers have had to use a variety of clever techniques...


Star smash-up is yet more evidence Einstein got it right about gravity

Star smash-up is yet more evidence Einstein got it right about gravity

20 November 2018

General relativity has survived its latest test after observations of a violent collision between neutron stars tallied perfectly with Einstein’s theory


space-time

The space-time echoes that point to a new theory of reality

20 June 2018

The discovery of gravitational waves was the crowning glory of Einstein's relativity. They might now have provided the first hint of something to scupper it


Dark energy survives neutron star crash test while rivals fail

Dark energy survives neutron star crash test while rivals fail

20 October 2017

We saw gravitational waves and light at the same moment from a neutron star merger, which means Einstein was right and some alternative theories are dead


Atomic clock

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

5 October 2017

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


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