Entangled particle pairs mirror each other's state instantly across a starfield, linked by a faint quantum thread. This visualizes the concept of quantum entanglement: two particles that flip between "blue" and "red" eigenstates in perfect correlation, no matter the distance between them, illustrating the idea popularly (if loosely) called "spooky action at a distance". Each pair is joined by a hand-built wavy BufferGeometry line whose vertices are recomputed every frame from a sine/cosine superposition, with glowing sprite "pulses" traveling along it to suggest signal propagation. Rendering uses Three.js WebGLRenderer with additive-blended sprites, emissive materials, and point lights for the glow, plus OrbitControls for free camera movement.