Physicists often describe the fabric of the universe we inhabit as four -
dimensional spacetime, comprising three dimensions of space and one of time.
They collapsed one of these dimensions mathematically into a minuscule line, yielding an 11 -
dimensional spacetime, flanked on either side by two 10 - dimensional membranes, or branes, colorfully dubbed «end of the world» branes.
So far, they have succeeded in creating a stable four -
dimensional spacetime, when viewed at large distances.
Not exact matches
To make predictions from the 10 - or 11 -
dimensional string / M theories, it is necessary to project them onto a world with four
spacetime dimensions, and some resulting descriptions have had phenomenological successes.
In a nutshell, Einsteinian gravity treats space and time as two of the same — four -
dimensional «
spacetime» where time is another dimension incorporated into the three dimensions of space — and matter influences the curvature of
spacetime while the curvature of
spacetime influences the motion of matter.
Look at the
spacetime gravity descriptions — you know the one, the two
dimensional rubber mat with the heavy mass of a planet distorting it showing how an object falls into the three
dimensional spiral of the unknown to science never observed vortex created by the mass of the planet.