SpaceX - Powering AI from Orbit: Sizing the Opportunity (Pt.6) SPCX is now the ultimate AI data-center and energy play. At ~$2.4T and ~80x forward sales, its valuation rests almost entirely on Space Data Center execution — where Starship, solar, and custom silicon could unlock a path toward $20T. This article is part 6 in a series of 6. You can find the rest of the articles here: P1 -P2 - P3 - P4 - P5 Summary Now publicly listed after its record June 2026 IPO, SPCX is best un

Tower Semiconductor - Powering AI From Orbit (Pt.5) Tower's SiGe BiCMOS + SiPho platform on 300mm wafers eliminates GFS's sole advantage, delivers 30% lower power than InP at 1/3 the cost with 85%+ yields, and cements TSEM as the dominant SiPh foundry for both hyperscale AI and Space DC deployments. This article is part 5 in a series of 6. You can find the rest of the articles here: P1 -P2 - P3 - P4 - P6 Summary Silicon photonics is displacing InP as the dominant optical inte

Powering AI From Orbit: MACOM, Coherent, STM, Hamamatsu (Pt.4) Heritage determines the clear near-term winners in Space DC optical networking (2026–2029), while inter-orbit links represent the only category of truly incremental photonic demand. This article is part 4 in a series of 6. You can find the rest of the articles here: P1 -P2 - P3 - P5 - P6 Summary Heritage is king in the 2026–2029 period, positioning Coherent, MACOM, STM, and Hamamatsu as the clear near-term winners

SpaceX - Powering AI from Orbit, Space Solar, and the Musk Stack (Pt.3) The orbital AI data center as tight satellite clusters: redefining photonic demand and unlocking compute beyond Earth’s physical limits. This article is part 3 in a series of 6. You can find the rest of the articles here: P1 -P2 - P4 - P5 - P6 Summary The Space DC is not a diffuse mesh of satellites spread around Earth — it is a constellation of tight orbital clusters, each functioning as a single cohere

SpaceX - Powering AI from Orbit, Space Solar, and the Musk Stack (Pt.2) AI compute has outgrown Earth’s power, cooling, and land walls — Starship and advanced solar cell chemistry now make the orbital Musk Stack economically inevitable. This article is part 2 in a series of 6. You can find the rest of the articles here: P1 - P3 - P4 - P5 - P6 Summary The bet is that AI compute has outgrown Earth — power, cooling, and land are all hitting walls — and 1.2 million satellites can

SpaceX - Powering AI from Orbit, Space Solar, and the Musk Stack (Pt.1) Space solar’s ~10× efficiency edge over terrestrial limits — powered by Musk’s self-reinforcing loop of xAI demand, SpaceX launches, and Starship’s killer app. This article is part 1 in a series of 6. You can find the rest of the articles here: P2 - P3 - P4 - P5 - P6 Summary Terrestrial solar faces hard physical limits — atmospheric absorption, day-night intermittency, and ~25% peak efficiency — while spa