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In the book the Grand Design by Stephen Hawking, he wrote about the M-theory, and how in that theory it has 11 dimensions. I do not quite get that, so can someone explain it to me a little bit. I understand four dimension is where space and time combine together, and there is no movement in four dimensional space because an event over time is represented by a line. I get that, but I do not quite understand how 11 dimension works, so I would really appreciate if anyone could help me understand this concept.

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closed as too broad by ACuriousMind, user36790, John Rennie, John Duffield, sammy gerbil Jul 15 '16 at 12:53

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ Related: physics.stackexchange.com/q/10527/2451 and links therein. $\endgroup$ – Qmechanic Jul 14 '16 at 22:18
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    $\begingroup$ That's really a rather broad question, and perhaps impossible to answer in a way that is both understandable to you and correct. A useful answer would involve first explaining the ten dimensions of superstring theories and then explaining why an eleven-dimensional theory called M-theory is believed to exist that "connects" there, which really amounts to a textbook. For a general discussion of extra dimensions, see here, for a specific discussions of 10d in string theory, see here $\endgroup$ – ACuriousMind Jul 14 '16 at 22:21
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    $\begingroup$ At the smallest scales, instead of being able to move forward/back along three orthogonal axes (and forward through time), you are able to move forward/backward along ten orthogonal axes (and forward through time). Easy peasy! $\endgroup$ – user12029 Jul 14 '16 at 22:22
  • $\begingroup$ Read the link Qmechanic has listed above, and Google a free e-book , using the keywords String Theory For Dummies Pdf. The book is very good, it tells you why some people like string theory and what it's drawbacks are. $\endgroup$ – user108787 Jul 14 '16 at 22:24