Why does our universe have something instead of nothing?
The universe is full of matterMohd. Afuza/Shutterstock The following is an extract from our Lost in Space-Time newsletter. Each month,...
cosmology
There may be a cosmic speed limit on how fast anything can grow
Have we found a new limit on the universe?kkssr/Shutterstock A newly proposed cosmic speed limit may constrain how fast anything...
Signals from exotic new stars could hide in gravitational wave data
We can detect signals from black holes merging – but could we also pick up traces of more exotic collisions?VICTOR...
We’ve just doubled the number of gravitational waves we can find
Gravitational wave detectors use laser beams in tubes that span kilometresThe Virgo Collaboration Gravitational waves that span thousands to billions...
We physicists could learn a lot by stepping beyond our specialisms
Shutterstock/Creative-To​uch A century ago, it was possible for a physicist to know almost everything there was to know about physics....
We finally know exactly how dark deep space is
NASA’s New Horizons spacecraft in deep spaceNASA, APL, SwRI, Serge Brunier (ESO), Marc Postman (STScI), Dan Durda We finally know...
How Einstein was both right and wrong about gravitational waves
Gravitational waves are vibrations in space-time itselfPeter Jurik/Alamy The following is an extract from our Lost in Space-Time newsletter. Each...