astronaut helmet portrait, low-key photo

Single subject: one adult human face pressed slightly back from the inside of a clear domed space helmet with visible helmet rim and collar, occupying the center and filling roughly two-thirds of a vertical 2:3 frame, with the helmet top near the upper edge and lower collar near the bottom edge. Composition is a tight close-up portrait, eye-level viewpoint, face centered with minimal negative space in the sides and a narrow dark gap in the upper third where the helmet rim reads against shadow. Lighting is low-key with intense internal red rim light that sculpts cheekbones, nostrils, and the wet sheen on skin, while subtle cool teal reflections temper the upper dome. Face details include damp skin, faint stubble, furrowed brow, dilated pupils and slightly parted lips expressing shock, with small beads of condensation and tiny surface scratches on the visor. Materials read as polished acrylic for the visor with micro-scratches, matte metal for the collar rings, and fabric textures hinted at around the neck seam. Background is deep shadow occupying the outer edges and upper 25% of the frame to maintain contrast and isolation. Render as a realistic portrait photograph with crisp midplane facial focus and shallow depth that lets visor reflections remain soft but readable.