the four-dimensional coordinate system in which all physical objects of the known universe are located, and in which all physical events occur; it consists of three spatial dimensions and one time dimension; -- also called the space-time continuum.

A four-dimensional coordinate system, or reference frame, that physicists and astronomers use to describe the universe. Space-time has three spatial axes (x, y, z) and one time axis (t). A point in this reference frame is called an event, because it is something that happens in space and time. Einstein's General Theory of Relativity explains that the speed of light is constant between all reference frames, regardless of their motion relative to each other.

The four-dimensional "fabric" that results when space and time are unified.

A four-dimensional space used to represent the universe in the theory of relativity, with three dimensions corresponding to ordinary space and the fourth to time. Also known as space-time continuum. See more about this in the FAQ section.

four-dimensional world of space and time as visualized in the theory of relativity. An event is located in the space-time continuum analogous to a point in three-dimensional space.

the 4-dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are located

part of Einstein's Theory of General Relativity, that space and time are linked.

Warp: A crinkle, tear, or bend in the space-time continuum.

The four-dimensional space whose points are events.

The three dimensions of space plus the dimension of time, which measures the procession of events in space. Einstein first proposed this notion of an integrated “space-time” in his 1905 Theory of Special Relativity.

See space-time continuum.

Space and time alike to be taken transactionally and behaviorally - never as fixed or given frames (formal, absolute, or Newtonian) nor exclusively as physical specializations of the types known since relativity. Note: See Bentley, "The Factual Space and Time of Behavior," The Journal of Philosophy, XXXVIII (1941), 477-485.

an identifiable point within three dimensions of physical space at one exactly computed time.

A 4-dimensional universe with space and time unified; a continuous system of one time coordinate and three space coordinates by which events can be located and described.