This interactive 3D visualization shows the structure of an atom, with a glowing gold nucleus at the center and electrons arranged in three distinct shells colored green, blue, and pink. Using Three.js with WebGL rendering, it displays 18 electrons total—2 in the inner shell, 8 in the middle, and 8 in the outer shell—with each shell rotating at a different speed to simulate orbital motion. The scene includes directional and point lighting to make the electrons appear luminous, and users can rotate, zoom, and pan the camera through OrbitControls. The animation loop continuously updates the shell rotations each frame.