One of the most interesting theories in modern physics today is related with the M-Theory
, a wrap-up of the 5 String Theories
of the nineties. While the String Theory imagined a universe (or multiverse) of 9 dimensions, there were some inconsistencies in the math that were only solved by the introduction of a 10th dimension; thus the M-Theory is born.
This video shows a quite simple way to imagine all these dimensions! Quite interesting for those who never figured out what a 4D cube
really looked like! And of course, for everyone who is interested in knowing one of the most discussed theories nowadays in the scientific community! This is the stuff that reality is made of!
For those who are interested in the subject, I recommend you this BBC documentary, a very nice introduction to all this parallel universes stuff: