The earliest versions of string theory needed 26 spatial dimensions, but after supersymmetry and some dimensional layoffs, theorists were able to slim that number down to “only” 10.

The type of string theory that Borcherds investigated can only be mathematically formulated in 25 spatial dimensions. Because our world consists of only three visible spatial dimensions, ...

Physics Why string theory has been unfairly maligned - and how to test it. String theory is widely considered beyond empirical investigation. But we could conceivably test it thanks to ancient ...

String theory + a capella = A Montrealer's formula for online fame. Montrealer Tim Blais, better known as A Capella Science, defies all stereotypes of what it means to be a physicist.

I don't understand string theory. In fact, I bet there's fewer than 1% of the world that can speak cogently on the subject, but I am fascinated by the concept and have read a bit on it.

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests.

String theory—the theoretical roots of which date back to the late 1960s—is one of those explanations, and the framework’s fortunes have risen and fallen with the passing decades.

In all string theory models, the strings have some tension; but in most conventional models the value of this tension is a constant that is added in by hand, arbitrarily.