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Space Computing Deep-Dive

Deep-Dive: Radiation-Hardened Compute & Thermal Management in Orbital Servers

By Tech Bytes Staff August 23, 2026 Source: Ars Technica

Operating high-performance GPU and NPU clusters in Low Earth Orbit introduces intense engineering challenges, specifically regarding **Galactic Cosmic Rays (GCR)** and **vacuum thermal dissipation**. Starcloud's nodes utilize Error-Correcting Code (ECC) memory with Triple Modular Redundancy (TMR) at the logic gate level.

Deep-Dive: Radiation-Hardened Compute & Thermal Management in Orbital Servers

Key Technical Developments

Because convective cooling is impossible in a vacuum, thermal energy is conducted via closed-loop phase-change heat pipes to multi-square-meter carbon-composite deployable radiators operating at elevated delta-T temperatures.

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Industry Impact & Outlook

Inter-satellite communications rely on 100 Gbps free-space optical inter-satellite laser links (ISLL), forming a resilient orbital mesh network above terrestrial latency bottlenecks.