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BudgetMay 11, 2026

Cowboy raises $275 million to build rockets with orbital data center upper stages

Cowboy raises $275 million to build rockets with orbital data center upper stages
Image source: SpaceNews
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Cowboy Space, founded less than two years ago as Aetherflux to develop space-based solar power, has raised $275 million at a $2 billion valuation to build rockets with upper stages that would serve as data centers once in low Earth orbit.

— Cowboy Space, founded less than two years ago as Aetherflux to develop space-based solar power, has raised $275 million at a $2 billion valuation to build rockets with upper stages that would serve as data centers once in low Earth orbit (LEO).

The San Carlos, California-based startup said early-stage investor Index Ventures led the Series B funding round in a brief May 11 news release, after leading its $50 million Series A last year.

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