CHAPTERS 0:00 What we see vs. possible hidden reality 2:06 What is a dimension? 3:22 Isn't time a dimension? 5:20 The strange ...

Or is it that our brains are simply incapable of imagining additional dimensions—dimensions that may turn out to be as real ...

Can adding every positive whole number really give you -1/12? We explore how physicists extract meaningful finite values from ...

Strike a bell, and it rings with a pitch and a fading that tell you about the bell: its size, its shape, the metal it is made of. Black holes ring too. When two merge, the newborn black hole shivers ...

Scientists seeking the secrets of the universe would like to make a model that shows how all of nature's forces and particles fit together. It would be nice to do it with Legos. But perhaps a better ...

The original version of this story appeared in Quanta Magazine. String theory captured the hearts and minds of many physicists decades ago because of a beautiful simplicity. Zoom in far enough on a ...

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it? String theorists, this one may be for you. The theorized object warps spacetime ...

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String theory proposes that the fundamental constituents of the universe are one-dimensional “strings” rather than point-like particles. What we perceive as particles are actually vibrations in loops ...