EntityQ856292· pop 38· linked from 285 articlesworld lineSign in to saveunique path of an object as it travels through 4-dimensional spacetimeConnectionscausal structureEntityPhysical ReviewEntityMinkowski diagramEntityhyperbolic orthogonalityEntitySunConceptAlbert EinsteinPersonphysicsEntityBlack holeConceptStephen HawkingPersongravityEntityInternational Standard Book NumberEntityDavid HilbertEntityRichard FeynmanEntitytheory of relativityEntityspeed of light in vacuumEntityscience fictionEntityHenri PoincaréEntityJ. Robert OppenheimerPersonspecial relativityEntitygeneral relativityEntityCategories1900s neologismsMinkowski spacetimeTheory of relativityTime in science