What is M-theory?
A) a theory of the universe in which all galaxies began as a common type "M galaxy" and then evolved into the types we see today
B) a type of dark matter theory in which the dark matter is made of "M" particles
C) a superstring theory in which there are 11 dimensions, instead of the usual ten, and all five string theories are equivalent
D) a cosmologic theory in which cosmic inflation occurred multiple times rather than just once

Question

Quizplus · Accepted Answer

M-theory is a theoretical framework in physics that unites all five superstring theories. It suggests that our universe may have 11 dimensions instead of the usual ten. The "M" in M-theory is believed to stand for "membrane" or "mother," but it is not clear exactly what it stands for.

What Is M-Theory