futuristic sci-fi portal to another galaxy – epic space travel concept art

advanced adventure alien alternate art artwork astronomy background cartoon celestial city civilization comics concept cosmic darkness deep digital dimension door earth energy epic exploration extraterrestrial fan fantasy fiction futuristic galactic galaxy games gateway glowing interdimensional intergalactic interstellar journey landing landscape legend light midnight mysteries nebula night odyssey otherworldly parallel person planetary portal poster rift scene scenery sci-fi science screenshot space space-time spaceship storytelling surreal technology time travel traveler universe vehicle vision vortex voyage wonders world wormhole