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Mathematical model combining space and time
In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of
Spacetime
Mathematical description of spacetime used in relativity
In physics, Minkowski spacetime (or Minkowski space; /mɪŋˈkɔːfski, -ˈkɒf-/) is the main mathematical description of spacetime in the absence of gravitation
Minkowski_spacetime
Hypothetical topological feature of spacetime
connects disparate points in spacetime. It can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different
Wormhole
Topics referred to by the same term
Look up spacetime in Wiktionary, the free dictionary. Spacetime is a mathematical model in mathematics and physics. Spacetime, space-time, space time
Spacetime_(disambiguation)
Graph of space and time in special relativity
A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity. Spacetime diagrams
Spacetime_diagram
Mathematical theory of the geometry of space and time
In physics, curved spacetime is the mathematical model in which, with Einstein's theory of general relativity, gravity naturally arises, as opposed to
Curved_spacetime
Condition in which spacetime itself breaks down
singularity, spacetime singularity, or simply singularity, is a theoretical condition in which gravity is predicted to be so intense that spacetime itself would
Gravitational_singularity
Description of gravity using discrete values
gravity as curvature of spacetime: in the slogan of John Archibald Wheeler, "Spacetime tells matter how to move; matter tells spacetime how to curve." On the
Quantum_gravity
Theory of gravitation as curved spacetime
property of space and time, or four-dimensional spacetime. In particular, the curvature of spacetime is directly related to the energy, momentum, and
General_relativity
Compact astronomical body
of general relativity, which describes gravitation as the curvature of spacetime, predicts that any sufficiently compact mass will form a black hole. The
Black_hole
Type of symmetry in physics
Spacetime symmetries are features of spacetime that can be described as exhibiting some form of symmetry. The role of symmetry in physics is important
Spacetime_symmetries
Framework of superstring theory
consequence of the geometry of spacetime. In spite of the fact that the universe is well described by four-dimensional spacetime, there are several reasons
M-theory
Theory of interwoven space and time by Albert Einstein
gravitational effects as the geometric curvature of spacetime. Special relativity is restricted to the flat spacetime known as Minkowski space. As long as the universe
Special_relativity
1981 novel by Rudy Rucker
Spacetime Donuts is a novel by Rudy Rucker published in 1981. Spacetime Donuts is a novel in which the universe consists of a single particle which is
Spacetime_Donuts
Two interrelated physics theories by Albert Einstein
primarily by Isaac Newton. It introduced concepts including 4-dimensional spacetime as a unified entity of space and time, relativity of simultaneity, kinematic
Theory_of_relativity
Topological structure of 4D spacetime
Spacetime topology is the topological structure of spacetime, a topic studied primarily in general relativity. This physical theory models gravitation
Spacetime_topology
Fluctuation of spacetime on very small scales
Quantum foam (also known as spacetime foam, or spacetime bubble) is a theoretical quantum fluctuation of spacetime on very small scales due to quantum
Quantum_foam
Concept in theoretical mathematical physics
mathematical physics, the concept of quantum spacetime is a generalization of the usual concept of spacetime in which some variables that ordinarily commute
Quantum_spacetime
2014 American science documentary television series presented by Neil deGrasse Tyson
Cosmos: A Spacetime Odyssey is a 2014 American science documentary television series. The show is a follow-up to the 1980 television series Cosmos: A
Cosmos:_A_Spacetime_Odyssey
Field-equations in general relativity
related the local spacetime curvature (expressed by the Einstein tensor) with the local energy, momentum and stress within that spacetime (expressed by the
Einstein_field_equations
Lorentzian manifold
In mathematical physics, Kundt spacetimes are Lorentzian manifolds admitting a geodesic null congruence with vanishing optical scalars (expansion, twist
Kundt_spacetime
universe spacetime Alcubierre spacetime Ellis wormhole spacetime Gödel spacetime Taub–NUT spacetime Kasner spacetime Mixmaster spacetime Vaidya spacetime
List_of_spacetimes
Graduate physics textbook by Sean M. Carroll
Spacetime and Geometry: An Introduction to General Relativity is a textbook written by physicist Sean Michael Carroll for beginning graduate students
Spacetime_and_Geometry
2025 Italian animated film
Spacetime Chronicles is a 2025 Italian animated film directed by Stefano Bertelli. The film was selected for the Contrechamp competition section at the
Spacetime_Chronicles
Theory of subatomic structure
relativity, a theory that explains the force of gravity and the structure of spacetime at the macro-level. The other is quantum mechanics, a completely different
String_theory
Set of spacetime events, light-connected to a given event
moment in time — and traveling in all directions, would take through spacetime. If one imagines the light confined to a two-dimensional plane, the light
Light_cone
Diagram of different points in spacetime
different points in spacetime through a conformal treatment of infinity. It is an extension (suitable for the curved spacetimes of e.g. general relativity)
Penrose_diagram
Hypothetical object of spacetime
In general relativity, a white hole is a hypothetical region of spacetime and singularity that cannot be entered from the outside, although energy, matter
White_hole
Type of Lorentzian manifolds
Lorentzian case admits nontrivial spacetimes with this property. Distinguishing these VSI spacetimes from Minkowski spacetime requires comparing non-polynomial
Vanishing scalar invariant spacetime
Vanishing_scalar_invariant_spacetime
Path of an object through spacetime
worldline) of an object is the path that an object traces in 4-dimensional spacetime. It is an important concept of modern physics, and particularly theoretical
World_line
Hypothetical FTL transportation by warping space
metric. Objects cannot accelerate to the speed of light within normal spacetime; instead, the Alcubierre drive shifts space around an object so that the
Alcubierre_drive
Exact solution for the Einstein field equations
The Kerr metric or Kerr geometry describes the geometry of empty spacetime around a rotating uncharged axially symmetric black hole with a quasispherical
Kerr_metric
Boundary region of asymptotically flat spacetimes in general relativity
region at the boundary of asymptotically flat spacetimes. In general relativity, straight paths in spacetime, called geodesics, may be space-like, time-like
Null_infinity
World line of a particle in spacetime which returns to its starting point
(CTC) is a world line in a Lorentzian manifold, of a material particle in spacetime, that is "closed", returning to its starting point. This possibility was
Closed_timelike_curve
2015 video game
Lovers in a Dangerous Spacetime is a space shooter video game developed by Asteroid Base for Microsoft Windows, OS X, PlayStation 4, Linux, Xbox One,
Lovers in a Dangerous Spacetime
Lovers_in_a_Dangerous_Spacetime
Games development studio
Spacetime Studios (STS) is a games development studio, based in Austin, Texas. Founded in 2005 by a small group of PC MMO game developers. The start-up
Spacetime_Studios
Generalization of the Dirac equation
equation in curved spacetime is a generalization of the Dirac equation from flat spacetime (Minkowski space) to curved spacetime, a general Lorentzian
Dirac equation in curved spacetime
Dirac_equation_in_curved_spacetime
Extension of quantum field theory to curved spacetime
field theory in curved spacetime (QFTCS) is an extension of quantum field theory from Minkowski spacetime to a general curved spacetime. This theory uses a
Quantum field theory in curved spacetime
Quantum_field_theory_in_curved_spacetime
Maximally symmetric Lorentzian manifold with a negative cosmological constant
considers the geometry of a unified spacetime instead of considering space and time separately. The cases of spacetime of constant curvature are de Sitter
Anti-de_Sitter_space
Everything in space and time
in time, but in the combined setting of spacetime. The special theory of relativity describes a flat spacetime. Its successor, the general theory of relativity
Universe
Semantic spacetime is a conceptual framework for agent-based modelling of spacetime, based on Promise Theory. Initially described as a model of computer
Semantic_spacetime
Spacetime that does not change over time and is irrotational
relativity, a spacetime is said to be static if it does not change over time and is also irrotational. It is a special case of a stationary spacetime, which
Static_spacetime
Attraction of masses and energy
of the curvature of spacetime, caused by the uneven distribution of mass. The most extreme example of this curvature of spacetime is a black hole, from
Gravity
Hypothetical travel into the past or future
it, such as a rotating black hole. Traveling to an arbitrary point in spacetime has very limited support in theoretical physics, and is usually connected
Time_travel
Framework of distances and directions
with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to
Space
Approach to quantum gravity using discrete spacetime
that spacetime is fundamentally discrete (a collection of discrete spacetime points, called the elements of the causal set) and that spacetime events
Causal_sets
theories to break down under extreme conditions, such as within known spacetime gravitational singularities like those at the Big Bang and at the centers
List of unsolved problems in physics
List_of_unsolved_problems_in_physics
Geometric space with five dimensions
such a space extends the familiar three spatial dimensions plus time (4D spacetime) by introducing an additional degree of freedom, which is often used to
Five-dimensional_space
In physics, a non-relativistic spacetime is any mathematical model that fuses n–dimensional space and m–dimensional time into a single continuum other
Non-relativistic_spacetime
Spacetime manifold
global hyperbolicity is a certain condition on the causal structure of a spacetime manifold (that is, a Lorentzian manifold). It is called hyperbolic in
Globally_hyperbolic_spacetime
3D web browser
SpaceTime (also known as SpaceTime3D) was a 3D graphical user interface that displayed web pages in a 3d tabbed stack. When using search engines such
SpaceTime_(software)
Tabletop science fiction role-playing game
SpaceTime is a role-playing game published by Blacksburg Tactical Research Center in 1988. SpaceTime is a cyberpunk system, fully compatible with Timelords
SpaceTime
British science fiction television series (2006–2011)
episodes "Boom Town" and "Utopia" to refuel, and is the location of the spacetime rift first seen in "The Unquiet Dead". The Cardiff Rift becomes "the first
Torchwood
Abstract coordinate system
expansion like a Fourier series. In a physical problem, they could be spacetime coordinates or normal mode amplitudes. In a robot design, they could be
Frame_of_reference
Geometric system used in black hole physics
In physics, spherically symmetric spacetimes are commonly used to obtain analytic and numerical solutions to Einstein's field equations in the presence
Spherically symmetric spacetime
Spherically_symmetric_spacetime
Solution of Einstein field equations
density of the dust grains, but this spacetime is an important pedagogical example. Like any other Lorentzian spacetime, the Gödel solution represents the
Gödel_metric
Concept in general relativity
In general relativity, the pp-wave spacetimes, or pp-waves for short, are an important family of exact solutions of Einstein's field equation. The term
Pp-wave_spacetime
Lorentzian manifold where curvature vanishes at large distances
An asymptotically flat spacetime is a Lorentzian manifold in which, roughly speaking, the curvature vanishes at large distances from some region, so that
Asymptotically_flat_spacetime
Expression in the theory of relativity
Lorentz scalar in Minkowski spacetime is the spacetime distance ("length" of their difference) of two fixed events in spacetime. While the "position"-4-vectors
Lorentz_scalar
Setting of relativistic physics in geometric algebra
physics, spacetime algebra (STA) is the application of Clifford algebra Cl1,3(R), or equivalently the geometric algebra G(M4) of physics. Spacetime algebra
Spacetime_algebra
Type of relativistic spacetime
A Malament–Hogarth (M-H) spacetime, named after David B. Malament and Mark Hogarth, is a relativistic spacetime that possesses the following property:
Malament–Hogarth_spacetime
Spacetime with complexified coordinates
Complex spacetime is a mathematical framework that combines the concepts of complex numbers and spacetime in physics. In this framework, the usual real-valued
Complex_spacetime
Region in spacetime from which nothing can escape
In astrophysics, an event horizon is a boundary in spacetime beyond which no signal can ever reach a given observer. Wolfgang Rindler coined the term
Event_horizon
Spacetime that admits a Killing vector that is asymptotically timelike
equations, a spacetime is said to be stationary if it admits a Killing vector that is asymptotically timelike. In a stationary spacetime, the metric tensor
Stationary_spacetime
Propagation of information or matter faster than the speed of light
slower-than-light (subluminal) speed with respect to the locally distorted spacetime region. Speculative faster-than-light concepts include the Alcubierre
Faster-than-light
Tool from special relativity
hyperbolic acceleration of a uniformly accelerating reference frame in flat spacetime. In relativistic physics, the coordinates of a hyperbolically accelerated
Rindler_coordinates
Equations describing classical electromagnetism
mechanics, or for use in quantum mechanics. The covariant formulation (on spacetime rather than space and time separately) makes the compatibility of Maxwell's
Maxwell's_equations
gravitation are tensor fields defined on a Lorentzian manifold representing spacetime. This article is a general description of the mathematics of general relativity
Mathematics of general relativity
Mathematics_of_general_relativity
Family of linear transformations
six-parameter family of linear transformations from a coordinate frame in spacetime to another frame that moves at a constant velocity relative to the former
Lorentz_transformation
Aspect of relativity in physics
Gravitational waves are waves of spacetime curvature produced by the relative motion of gravitating masses and which propagate away at the speed of light
Gravitational_wave
geodesics of the spacetime – straight lines in the case of flat Minkowski spacetime and their closest equivalent in the curved spacetime of general relativity
Introduction to the mathematics of general relativity
Introduction_to_the_mathematics_of_general_relativity
2012 web series
Can Also Travel Through Time (UWSAASTWCATTT), also known as Inspector Spacetime, is an American adventure-sci-fi web series created by Travis Richey,
Untitled Web Series About a Space Traveler Who Can Also Travel Through Time
Untitled_Web_Series_About_a_Space_Traveler_Who_Can_Also_Travel_Through_Time
Form of spatially correllated light with unusual optical properties
A spacetime wave packet is a spatial-temporal light structure with a one-to-one correlation between spatial and temporal frequencies. In particular, their
Spacetime_wave_packets
Electromagnetism in general relativity
physics, Maxwell's equations in curved spacetime govern the dynamics of the electromagnetic field in curved spacetime (where the metric may deviate from the
Maxwell's equations in curved spacetime
Maxwell's_equations_in_curved_spacetime
Theory of gravity by Albert Einstein
observed gravitational effect between masses results from their warping of spacetime. By the beginning of the 20th century, Newton's law of universal gravitation
Introduction to general relativity
Introduction_to_general_relativity
Hypothetical approach to quantum gravity with emergent spacetime
spacetime fabric itself evolves. There is evidence that, at large scales, CDT approximates the familiar 4-dimensional spacetime but shows spacetime to
Causal dynamical triangulation
Causal_dynamical_triangulation
Continuous progression from past to future
understands time to be inextricable from space within the concept of spacetime described by general relativity. Time can therefore be dilated by velocity
Time
Facet of general relativity
behavior of spacetime. Well-defined notions of total mass exist in important classes of spacetimes, such as asymptotically flat spacetimes and asymptotically
Mass_in_general_relativity
Theoretical framework in physics
changes in the spacetime metric. QFTs in curved spacetime generally change according to the geometry (local structure) of the spacetime background, while
Quantum_field_theory
German-born theoretical physicist (1879–1955)
proverbial among physicists summarizes the theory: "Spacetime tells matter how to move; matter tells spacetime how to curve." The Einstein field equations cover
Albert_Einstein
Class of solutions to Einstein's equation in general relativity
Conformastatic spacetimes refer to a special class of static solutions to Einstein's equation in general relativity. The line element for the conformastatic
Conformastatic_spacetimes
Mathematical instability in string theory
nothing is a physical instability that is found in higher-dimensional spacetime models. It was first described by Edward Witten in 1982, as a consequence
Bubble_of_nothing
Tensor that describes the 4D geometry of spacetime
study. The metric captures all the geometric and causal structure of spacetime, being used to define notions such as time, distance, volume, curvature
Metric tensor (general relativity)
Metric_tensor_(general_relativity)
Tensor describing energy momentum density in spacetime
describes the density and flux of energy and momentum at each point in spacetime, generalizing the stress tensor of Newtonian physics. It is an attribute
Stress–energy_tensor
Property of a mathematical space
found necessary to describe electromagnetism. The four dimensions (4D) of spacetime consist of events that are not absolutely defined spatially and temporally
Dimension
Duality between theories of gravity on anti-de Sitter space and conformal field theories
that spacetime is four-dimensional. One peculiar feature of string theory and M-theory is that these theories require extra dimensions of spacetime for
AdS/CFT_correspondence
Geometrical construct in general relativity
construct used in general relativity and its generalizations to delineate spacetime boundaries without reference to the dynamic Einstein field equations.
Killing_horizon
Causal relationships between points in a manifold
(causality conditions). In modern physics (especially general relativity) spacetime is represented by a Lorentzian manifold. The causal relations between
Causal_structure
Hamiltonian formulation of general relativity
found in the archives of Physical Review. The formalism supposes that spacetime is foliated into a family of spacelike surfaces Σ t {\displaystyle \Sigma
ADM_formalism
Concept that simultaneity depends on choice of reference frame
simultaneous hyperplane. In 1987, Robert Goldblatt published Orthogonality and Spacetime Geometry, directly addressing the structure Minkowski had put in place
Relativity_of_simultaneity
Concept in mathematical group theory
,\mathbf {t} )} (where X {\displaystyle X} is considered as a single spacetime vector). The conformal compactification is then S p × S q {\displaystyle
Conformal_group
Null hypersurface in general relativity
curvature singularity at the Cauchy horizon. However, since the region of spacetime inside the Cauchy horizon has closed timelike curves, it is subject to
Cauchy_horizon
Unified field theory
of a fifth dimension of space beyond the conventional four-dimensional spacetime of general relativity. According to this proposal, there are three dimensions
Kaluza–Klein_theory
Idea in quantum gravity
Induced gravity (or emergent gravity) is an idea in quantum gravity that spacetime curvature and its dynamics emerge as a mean field approximation of underlying
Induced_gravity
Algebra of 4D spacetime
three-dimensional Euclidean space as a model for (3+1)-dimensional spacetime, representing a point in spacetime via a paravector (3-dimensional vector plus a 1-dimensional
Algebra_of_physical_space
Situation or occurrence located at a specific point in space and time
event is anything that happens that has a specific time and place in spacetime. For example, a glass breaking on the floor is an event; it occurs at
Event_(relativity)
General-relativistic effect
flat spacetime. A common equation used to determine gravitational time dilation is derived from the Schwarzschild metric, which describes spacetime in the
Gravitational_time_dilation
Differentiable manifold with nondegenerate metric tensor
general relativity is a four-dimensional Lorentzian manifold for modeling spacetime, where tangent vectors can be classified as timelike, null, and spacelike
Pseudo-Riemannian_manifold
Estimates the mass of a spacetime in terms of the total area of its black holes
inequality, first conjectured by Sir Roger Penrose, estimates the mass of a spacetime in terms of the total area of its black holes and is a generalization
Riemannian_Penrose_inequality
postulate by deduction. Others differ in their approach to the geometry of spacetime and the linear transformations between frames of reference. As formulated
Formulations of special relativity
Formulations_of_special_relativity
SPACETIME
SPACETIME
SPACETIME
SPACETIME
Boy/Male
American, Anglo, Australian, British, Dutch, English, Swedish
Dutchman; A Native of Flanders; Man from the Lowlands
Girl/Female
Tamil
Poetess, Princess
Biblical
selling; knowledge
Girl/Female
Arabic, German, Muslim, Pashtun
Virgin; Young; Maiden; Pious; Woman
Female
English
Feminine form of English unisex Jordan, JORDANA means "flowing down."
Boy/Male
Hindu, Indian, Tamil
Brave
Boy/Male
Hindu
Worshipped
Female
Hawaiian
Hawaiian name LUANA means "to be at leisure." This name was used in the 1932 American film "The Bird of Paradise."Â
Girl/Female
Latin American
Feminine of Darius; a Persian royal name.
Girl/Female
Hindu, Indian
Gentle
SPACETIME
SPACETIME
SPACETIME
SPACETIME
SPACETIME