set background modern galaxy, cover minimalist, cool color for banners, flyers, brochures, posters, books, etc

abstract astronomy background banner banners blue book books brochure brochures business card cartoon chevron child color colorful comet concept cool cover creative design dynamic element entrance etc explorer fantasy flat flyer flyers future futuristic galaxy geometric geometry gradient graphic halftone hipster illustration line minimal minimalist modern neon office open orange paper pattern planet planetary planets poster posters print purple science seamless set shape simple sky space star stock style symbol technology template texture travel trendy universe wallpaper world wrapping