String theory began over 50 years ago as a way to understand the strong nuclear force. Since then, it’s grown to become a theory of everything, capable of explaining the nature of every particle, ...
The strings of string theory are unimaginably small. Your average string, if it exists, is about 10-33 centimeters long. That's a millionth of a billionth of a billionth of a billionth of a centimeter ...