Aetherflux

Orbital data center, space solar power, Galactic Brain

US$2B privateest. 2024aetherflux.com (opens aetherflux.com)Checked 10 Oct

The brief

Analyst view
  • Raised $60M ($10M seed + $50M Series A); closed $275M Series B in May 2026 at $2B valuation, rebranding to Cowboy Space.
  • First Galactic Brain satellite targeted for Q1 2027, providing multi-gigabit compute services.
  • Pivoted from solar-power transmission to orbital data centers, where space-sunlight and natural cooling cut costs.

Technical approach

As reported
Space Solar

Solar panels in permanent daylight

Satellites orbit in sunlight 70% of the time, unlike Earth which has nighttime. Solar cells generate continuous power without weather interruption.

Natural Cooling

Vacuum as infinite radiator

Satellites shed heat directly into space at absolute-zero temperatures. Data center chillers use 30% of ground facility power; space needs none.

AI Inference Focus

Latency-tolerant workloads

Targets AI inference and batch computing. Data uplinks feed models; results beam down to Earth.

Constellation Growth

30–100+ satellites per launch

Launches via Falcon 9 (~30 per mission) and Starship (100+) let Aetherflux scale capacity. Older satellites handle lower-priority work as they age.

Primer