Astronaut in white spacesuit walking inside a massive prismatic light beam, Octane Render 1.2, GPU Path Tracing, Spectral, Vectron, ultra photorealistic, dramatic volumetric light shaft filled with intense rainbow caustics and prismatic dispersion, floating glass crystals and particles, deep space background with stars, cinematic lighting, god rays, lens flares, reflective helmet with colorful reflections, epic and mysterious atmosphere, 8K, Octane AI Light 2.0, OpenPBR materials