Mood: Dreamy | Subject: A geometrically perfect, spiraling double helix formed by a myriad of twinkling stars, set against the canvas of deep space | Timing: Perpetual night, in the heart of the cosmos | Lens: Wide-angle | Lighting Conditions: The radiant light from the stars casting a soft glow on the surrounding nebulas | Style: Fusion of celestial majesty and abstract geometry | Colors: The brilliant whites and blues of the stars contrasted against the deep blacks of space and the vibrant purples and blues of the nebulas | Background: An expansive view of the cosmos, its infiniteness adding depth and mystery | Perspective: Distant, capturing the full splendor of the starry double helix and the grandeur of the cosmos | Focal Point: The center of the double helix, where the stars are most densely packed and the light most radiant | Space: Infinite, emphasizing the grand scale of the double helix and the tranquil beauty of the cosmos | Pattern/Texture: The smooth, ethereal texture of the stars contrasted with the cloudy, swirling nebulas | Element defining the scale: A solitary comet streaking past the double helix, its size providing a sense of the scene's grand scale | Depth of Field: Deep, focusing on the starry double helix while subtly blending into the mystical cosmos backdrop | Feeling: Awe-inspiring and tranquil | Contrast elements: The dreamy scene of a geometrically perfect double helix of stars in the heart of the cosmos, its celestial majesty and abstract geometry enhanced by the radiant starlight and contrasting textures, set against the backdrop of the mysterious, infinite cosmos.