Above the Cloud: Building Data Centers in Space - Richard Campbell - NDC Copenhagen 2026

Value of the Information & Strength of the Argument

The talk provides valuable insights by quantifying the challenges of space-based data centers, moving beyond hype. The argumentation is solid, based on publicly available specifications and orbital mechanics. Campbell walks through each subsystem, providing concrete numbers and comparisons, making the case that while the concept is not impossible, it is impractical for most workloads. He emphasizes the latency and cooling issues, which are often overlooked. The analysis is grounded and avoids sensationalism.

Scientific Rigor, Source Quality, Title Accuracy

The talk demonstrates scientific rigor by using specific data points (e.g., NVL72 power draw, solar panel efficiency, Starlink capabilities) and referencing real systems. The sources are primarily public specifications and his own calculations, which are transparent. The title accurately reflects the content. The talk is an expert opinion rather than a peer-reviewed study, but it is well-reasoned and based on verifiable data.

The title accurately reflects the content, which explores the feasibility of space-based data centers.

8/10

The talk is grounded in engineering analysis, with detailed calculations and references to real systems (Starlink, ISS, Nvidia NVL72). The speaker is experienced and transparent about assumptions. However, it is an opinion piece based on public data, not peer-reviewed research.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 02:00Introduction and background on the speaker's space-related talks.
• 05:00Discussion of Star Cloud's H100 satellite launch and their ambitious plans.
• 10:00Explanation of different orbits and their latency implications.
• 15:00Introduction of the Nvidia NVL72 as the computational unit for analysis.
• 20:00Breakdown of satellite bus components: structure, command, attitude control.
• 25:00Power requirements: 135 kW, solar panel area calculation.
• 30:00Cooling challenges: heat radiation in vacuum, ammonia system.
• 35:00Communication: laser links, latency, and reliance on Starlink.
• 40:00Battery vs. sun-synchronous orbit trade-offs.
• 45:00Overall mass and size estimates, comparison to existing satellites.

• NDC Conferences — Conference organizer and host of the talk.
• NDC Copenhagen — Specific conference where the talk was recorded.

• Star Cloud — Startup mentioned in the talk that launched an H100 into space.

• SpaceX Starship — While not directly contradicting, the talk implies Starship's delays affect the timeline for space data centers.

• ndccopenhagen.com