detailed view of a spiral galaxy vortex with stars

space vortex swirl outer stars spiral astrophysical gravitational black hole orange intergalactic event horizon accretion disk singularity quantum gravity supermassive dark matter energy redshift light year cosmic general relativity spacetime galactic nucleus inflation waves extragalactic spectroscopy photometry plasma physics astrometry hubble constant cosmology lagrangian points keplerian orbit halo rays magnetosphere electromagnetic infrared astronomy ultraviolet gammaray parallax lambda void interstellar