galaxy space scene with planets, stars and galaxies. banner galaxies template. many nebulae and galaxy in space, many light years

astronomy background cosmos deep galaxy illustration night outer planet science sky space star universe black earth fantasy nebula starry stars way abstract color design astrology blue moon orbit system light beautiful colorful dust infinity nature glow celestial clouds plasma solar cosmic graphic wallpaper banner mars saturn shine world interstellar scene planets galaxies galaxies template nebulae years away universe large-scale structure render