X @Elon Musk

Satellite Technology & Innovation - Starlink satellites transitioned from black surfaces (96% light absorption) to near-perfect mirrors (over 99.9% light reflection) to reduce satellite heating and visibility from Earth [1] - The mirror technology utilizes a Bragg mirror, a dielectric mirror film with multiple thin plastic layers of varying refractive indices, reflecting light while allowing radio waves to pass through [1] - Phased array antennae, a 2D grid of transceivers, are used to steer microwave beams to Starlink terminals without moving parts [2] - SpaceX employs a unique satellite deployment method where the upper stage spins, releasing satellites with slightly different angular momentum for gradual separation, eliminating the need for springs [3] - The satellite stack is held in place during launch by retention bars, minimizing wasted weight compared to traditional ESPA bus systems [4]