Starcloud, an orbital data center startup backed by Nvidia, has announced plans to begin mining Bitcoin from space later this year. The company's CEO, Philip Johnston, stated that its second spacecraft, set for launch in 2026, will carry Bitcoin ASIC miners, positioning Starcloud to become the first entity to mine Bitcoin off Earth.
In an interview with HyperChange and a subsequent post on X, Johnston argued that Bitcoin mining is "one of the most compelling use cases" for space-based computing due to the significant cost advantage of ASICs over GPUs. "GPUs are about 30 times more expensive per kilowatt or per watt than ASICs," Johnston explained. "A 1-kilowatt B200 chip, it might cost $30,000. A 1-kilowatt ASIC is like $1,000." He further claimed that Bitcoin mining, which consumes about 20 GW of power continuously, makes no sense on Earth and that "in the end state, all of this will be done in space," envisioning it as a future "massive industry."
Founded in early 2024 to address AI's rising energy needs, Starcloud launched a satellite with an NVIDIA H100 GPU in November 2025, marking a first for powerful GPU operation in space. Its long-term vision involves a constellation of around 88,000 satellites primarily powered by solar energy.
However, the plan faces significant skepticism and technical hurdles. Industry analysts and leaders, including OpenAI CEO Sam Altman, highlight prohibitive near-term economics due to high launch costs, difficult in-orbit repairs, and unresolved engineering challenges around cooling and maintenance. A Gartner analysis flags these constraints as pushing capital intensity far beyond terrestrial alternatives.
A critical Bitcoin-specific challenge is orbital latency. Analysis by experts like Peter Todd indicates that block propagation delays from space could increase stale-block rates, eroding mining revenue, especially if a space-based miner commands a non-trivial share of the network hash rate.
While pilot missions to validate power and cooling assumptions are considered plausible, scaling is viewed as uneconomic for the foreseeable future. Experts cited by Fortune suggest meaningful scale is decades away without major breakthroughs, despite the advantage of continuous solar exposure in orbit.
