EntityQ1821402· pop 14· linked from 25 articlesluminosity distanceSign in to saveastronomical measurandConnectionsMilky WayEntityInternational Standard Book NumberEntityspacetimeEntityparsecEntityquasarEntityredshiftEntityapparent magnitudeEntityabsolute magnitudeEntityEuclidean spaceEntityluminosityEntitytime dilationEntitycurvatureEntityfluxEntitycomoving distanceEntitydistance modulusEntitydistance measuresEntityAngular diameter distanceEntityCategoriesEquations of astronomyObservational astronomyPhysical quantities