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In [[physics]], '''spacetime''' is any [[mathematics|mathematical]] model that combines [[space]] and [[time]] into a single construct called the '''spacetime [[continuum]]'''.  Spacetime is usually interpreted with space being three-dimensional and time playing the role of a fourth dimension that is of a different sort than the spatial dimensions. According to certain Euclidean [[space]] [[perception]]s, the [[universe]] has three dimensions of space and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and sub[[atom]]ic levels.

In [[physics]], '''spacetime''' is any [[mathematics|mathematical]] model that combines [[space]] and [[time]] into a single construct called the '''spacetime [[continuum]]'''.  Spacetime is usually interpreted with space being three-dimensional and time playing the role of a fourth dimension that is of a different sort than the spatial dimensions. According to certain Euclidean [[space]] [[perception]]s, the [[universe]] has three dimensions of space and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and sub[[atom]]ic levels.