Since the 1960s, researchers have been puzzling string theory, a theoretical framework of reality that includes tiny, wriggling one-dimensional objects- called strings—that make up the fabric of everything. ... While researchers believe that it worked, but no one can prove it.

Has string theory been proven?

String theory (or, more technically, M-theory) is often described as the leading candidate for the theory of everything in our universe. But there's no empirical evidence for it, or for any alternative ideas about how gravity might unify with the rest of the fundamental forces.

Will string theory ever be solved?

The mathematics necessary to solve the theory have not yet been discovered.) Because string theory has near-miraculous breakthroughs every 8 to 10 years, we can expect 2 more breakthroughs in the theory before 2020, and hence might be able to solve this theory by then.