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extra dimensions


The Map of Mathematics

February 13, 2020

Explore our surprisingly simple, absurdly ambitious and necessarily incomplete guide to the boundless mathematical universe.

520px illustration for the bounce model theory

How the Universe Got Its Bounce Back

January 31, 2018

Cosmologists have shown that it’s theoretically possible for a contracting universe to bounce and expand. The new work resuscitates an old idea that directly challenges the Big Bang theory of cosmic origins.


Moonshine Master Toys With String Theory

August 4, 2016

The physicist-mathematician Miranda Cheng is working to harness a mysterious connection between string theory, algebra and number theory.

Inside this chamber, silica spheres probe for hidden extra dimensions, distortions of gravity, and dark-matter particles. | Peter DaSilva for Quanta Magazine
experimental physics

Tiny Tests Seek the Universe’s Big Mysteries

May 3, 2016

The search for exotic new physical phenomena is being led by huge experiments like the Large Hadron Collider. But at the other end of the spectrum lie tabletop experiments — small-scale probes of hidden dimensions, dark matter and dark energy.


String Theory Meets Loop Quantum Gravity

January 12, 2016

Two leading candidates for a “theory of everything,” long thought to be incompatible, may be two sides of the same coin.


Visions of Future Physics

September 22, 2015

Nima Arkani-Hamed is championing a campaign to build the world’s largest particle collider, even as he pursues a new vision of the laws of nature.


Theories of Everything, Mapped

August 3, 2015

Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.

theoretical physics

In Fake Universes, Evidence for String Theory

February 18, 2015

If string theorists can show that their framework is the only consistent theory of quantum gravity, does that make it true even without tangible evidence?