space-time
Four-dimensional continuum
Space-time is the framework combining the three dimensions of space with time as a fourth dimension, treated as a unified continuum.
Einstein's relativity showed that space and time are not separate absolutes but interconnected—gravity warps space-time, and motion affects how time passes.
The concept is central to modern physics: The black hole created a distortion in space-time.
Measurable extent or scope
- coordinateArrange for unified action
- axisRotation reference line
- vectorQuantity with direction
- geometryScience of spatial relationships
topology · distance · position · direction · boundary · volume · orientation · temporal
Byword for genius
- relativityHow observers differ
- curvatureDeviation from flatness
- gravityMutual mass attraction
- continuumUninterrupted, gradual sequence
fabric · tensor · geodesic · manifold · causality · frame of reference · metric · interval
Loud explosive noise
- expansionIncrease in scope
- universeComplete system or domain
- singularityPoint where values explode
- inflationSustained price level increase
cosmology · dark energy · black hole · event horizon · entropy · multiverse · observable universe · cosmic inflation
Orderly totality of existence
- galaxiesGravitationally bound stellar assemblies
- starsLuminous celestial bodies
- nebulaInterstellar gas formation
- quasarLuminous active galactic core
supernova · dark matter · redshift · cosmic rays · interstellar · intergalactic · stellar · astronomical
Curved celestial path
- trajectoryPath of moving object
- ellipseConic section curve
- perihelionOrbital point nearest sun
- aphelionFarthest point from sun
barycenter · inclination · eccentricity · heliocentric · geocentric · orbital plane · Kepler · escape velocity
dimension
Measurable extent or scope
- coordinateArrange for unified action
- axisRotation reference line
- vectorQuantity with direction
geometry · topology · distance · position · direction · boundary · volume · orientation · temporal · embedded
Einstein
Byword for genius
- relativityHow observers differ
- curvatureDeviation from flatness
- gravityMutual mass attraction
continuum · fabric · tensor · geodesic · manifold · causality · frame of reference · metric · interval · inertial
big bang
Loud explosive noise
- expansionIncrease in scope
- universeComplete system or domain
- singularityPoint where values explode
inflation · cosmology · dark energy · black hole · event horizon · entropy · multiverse · observable universe · cosmic inflation · wormhole
cosmos
Orderly totality of existence
- galaxiesGravitationally bound stellar assemblies
- starsLuminous celestial bodies
- nebulaInterstellar gas formation
quasar · supernova · dark matter · redshift · cosmic rays · interstellar · intergalactic · stellar · astronomical · astrophysics
orbit
Curved celestial path
- trajectoryPath of moving object
- ellipseConic section curve
- perihelionOrbital point nearest sun
aphelion · barycenter · inclination · eccentricity · heliocentric · geocentric · orbital plane · Kepler · escape velocity · orbital mechanics
- physicsphysics, momentum, atom, acceleration, gravity
- EinsteinE=mc2, relativity, general relativity, special relativity, physics
- cosmologybig bang, Big Bang, big bang theory, universe, dark matter
- relativityrelativity, general relativity, relativity theory, reference frame, E=mc2
- spacetimefour-dimensional, tesseract, hypercube, reference frame, frame of reference
- spacesun, moon, stars, star, Earth
space-timeabsolute time
Time flowing uniformly everywhere
Newtonian mechanics · classical physics · classical mechanics · three-dimensional space
space-timespirit realm
Domain of disembodied souls
void · nothingness · eternity · timelessness