Lasers vs Radio: Inside the Laser Satellite Communication Revolution (2025)
NASA’s TBIRD CubeSat hit a 200 Gbps laser downlink in 2023, sending 4.8 terabytes in under five minutes. SpaceX’s Starlink, with over 4,000 satellites by early 2024, moves about 42 petabytes daily via inter-satellite lasers. Amazon’s Project Kuiper showed 100 Gbps laser links in late 2023, with production satellites set for 2025. Europe’s SpaceDataHighway reached 1.8 Gbps and 99.5% reliability by 2024.