spacetime
Four-dimensional continuum
Spacetime is the four-dimensional framework combining three dimensions of space with one of time, treating them as a unified continuum rather than separate concepts.
Einstein's relativity showed that space and time are interwoven—massive objects curve spacetime, and motion through space affects the passage of time.
The black hole warped spacetime around it.
Hypothetical spacetime tunnel
- traversableCapable of being crossed
- exotic matterSubstance violating standard physics
- throatNeck's inner passage
- shortcutQuicker alternative path
hyperspace · interstellar travel · negative energy · mouths · stabilization
Deviation from flatness
- geodesicShortest curved-surface path
- manifoldMany and various
- metricStandard of measurement
- tensorMultilinear algebraic object
dimension · coordinate · topology · non-Euclidean · four-dimensional · Christoffel symbols · parallel transport · conformal
Gravity as curved spacetime
- special relativityTheory uniting space, time
- simultaneityState of coexisting temporally
- causalityCause-effect connection
- invarianceQuality of staying unchanged
frame of reference · observer · twin paradox · reference frame · relativistic
Loud explosive noise
- singularityPoint where values explode
- inflationSustained price level increase
- dark energyForce accelerating universal expansion
- dark matterLightless cosmic mass
expansion · redshift · observable universe · nucleosynthesis · flatness · scale factor · multiverse
Propagating curvature in spacetime
- black holeCollapsed star's remnant
- event horizonBlack hole's edge
- gravity wellRegion of curved spacetime
- gravitational lensingMass distorting light's path
mass-energy · tidal forces · gravitational collapse · gravitational field
Theory merging spacetime and subatomic physics
- string theoryFilament-based particle framework
- gravitonHypothetical gravity-carrying particle
- entanglementState of being intertwined
Study of existence's nature
- presentismBias toward current era
- becomingAttractive or appropriate
- persistenceContinuing despite difficulty
- identityWho someone is
Leibniz · Mach · conventionality · grounding · metaphysics
wormhole
Hypothetical spacetime tunnel
- traversableCapable of being crossed
- exotic matterSubstance violating standard physics
- throatNeck's inner passage
shortcut · hyperspace · interstellar travel · negative energy · mouths · stabilization
curvature
Deviation from flatness
tensor · dimension · coordinate · topology · non-Euclidean · four-dimensional · Christoffel symbols · parallel transport · conformal · foliation
general relativity
Gravity as curved spacetime
- special relativityTheory uniting space, time
- simultaneityState of coexisting temporally
- causalityCause-effect connection
invariance · frame of reference · observer · twin paradox · reference frame · relativistic
big bang
Loud explosive noise
- singularityPoint where values explode
- inflationSustained price level increase
- dark energyForce accelerating universal expansion
dark matter · expansion · redshift · observable universe · nucleosynthesis · flatness · scale factor · multiverse
gravitational waves
Propagating curvature in spacetime
- black holeCollapsed star's remnant
- event horizonBlack hole's edge
- gravity wellRegion of curved spacetime
gravitational lensing · mass-energy · tidal forces · gravitational collapse · gravitational field
quantum gravity
Theory merging spacetime and subatomic physics
- string theoryFilament-based particle framework
- gravitonHypothetical gravity-carrying particle
- entanglementState of being intertwined
ontology
Study of existence's nature
- presentismBias toward current era
- becomingAttractive or appropriate
- persistenceContinuing despite difficulty
identity · Leibniz · Mach · conventionality · grounding · metaphysics
- Spacetime Geometrycurvature, geodesics, general relativity, manifolds, tensors
- cosmosuniverse, galaxies, galaxy, stars, star
- physicsphysics, momentum, atom, acceleration, gravity
- EinsteinE=mc2, relativity, general relativity, special relativity, physics
- cosmologybig bang, Big Bang, big bang theory, universe, dark matter
- cosmic physicsgravity, dark energy, dark matter, black holes, gravitational waves
spacetimeabsolute time
Time flowing uniformly everywhere
Newtonian mechanics · classical mechanics · three-dimensional space · flat space · timelessness
time, space, timeless, spacious, timely, timing, timetable, spacecraft, spatial