theoretical physics


Three Research Teams Account for the Total Sum of Ordinary Matter Particles in the Universe

Accounting for all matter the universe is pretty mind boggling, but it’s not nearly as impossible as it sounds.


Will the ‘Information Paradox’ Pioneered by Stephen Hawking Ever Be Resolved?

The problem inspired a famous physics bet and a "black hole war."


Stephen Hawking Has Died at 76

Hawking was one of humanity's most important scientists and leaves behind an ongoing project to send a small spacecraft to Earth's closest star system.


Theoretical Physicists Are Getting Closer to Explaining How NASA’s ‘Impossible’ EmDrive Works

The EmDrive propulsion system might be able to take us to the stars, but first it must be reconciled with the laws of physics.


The Cat Is Dead: Enjoy These Three Music Videos About Theoretical Physics

Backreaction's Sabine Hossenfelder​ offers a synthwave tour of the hard questions.


The World Is Too Complicated for Donald Trump to Be President, Theoretical Physics Suggests

An emerging branch of complex systems mathematics suggests in cold, analytical terms that Donald Trump is not smart enough to be president.


Inside a British Urban Outfitters, a Hypothesis for the Nature of Reality

A popup British art exhibit explores the idea that reality is a computer simulation.


Elon Musk Says There’s a ‘One in Billions’ Chance Reality Is Not a Simulation

​Elon Musk says he firmly believes reality is a simulation created by a superintelligence.


Talking Anarchy, Genius, and God with Italy's Best-Selling Theoretical Physicist

The distinguished theoretical physicist Carlo Rovelli started out as a radical who wanted to overthrow the Italian government.


The 'Sharpest Picture Yet' of the Higgs Boson

Two experiments at the Large Hadron Collider combine forces to give new precision to the elusive particle's properties.


We Asked a Theoretical Physicist How Time Travel in the Terminator Movies Works

We talked about everything from quantum mechanics to why Arnold has to be naked.