For the very first time Elon Musk explains the "space data center plan" of @SpaceX in detail and its AI1 orbital AI data center satellite - and suddenly it looks so much closer than I thought.

He says "There's not some magic necessary that doesn't exist for AI satellites. As Ian said this is a lot of this is technology we've already made for the… we basically don't think this is a super hard problem compared to things that we already do."

📌 Power and compute capacity： - 150 kW peak power - ~120 kW sustained/average compute power - Roughly equivalent to one full NVIDIA GB300 （or upcoming Rubin） rack in a typical data-center operating envelope （~140 kW peak is possible but 120 kW average is more realistic for sustained workloads）.

📌 Solar array： - Assumed efficiency： 250 W/m2 （expected to improve beyond this）. - Large， deployable solar panels （evolutions of the solar arrays already flying on Starlink V3 satellites）.

📌 Radiators （thermal management）： - Double-sided design， oriented "knife-edge" to the Sun to minimize solar heating. - Heat rejection： ~1，400 W/m2 （expected to improve）. - Radiator panels are roughly the same size/scale as the Starlink V3 solar arrays （~70 m wingspan class）.

📌 Design philosophy： - Significantly simpler than a Starlink satellite - no massive phased-array antennas or complex communications hardware. - Core elements： solar panels + radiators + compute chips + laser links. - Larger overall than Starlink sats but described as "the easier one to design for."

📌 Connectivity： - ~1 terabit/s via inter-satellite laser links. - Can mesh with the existing Starlink constellation or link directly to ground. - Low latency： satellites planned for ~600-800 km altitude → light-travel time yields only ~6-8 ms round-trip （light travels ~300 km per millisecond）.