SpaceX’s proposal to deploy a constellation of one million orbiting data centers is raising alarm among astronomers, who warn that the sheer scale of the project could severely disrupt ground-based observations and accelerate pollution in the upper atmosphere. The plan, submitted to the U.S. Federal Communications Commission (FCC), involves positioning thousands of bright, moving objects in orbit—potentially visible to the naked eye—that would interfere with the work of modern observatories.
The Scale of the Problem
Existing satellite constellations, like SpaceX’s Starlink, already cause streaks in telescope images, but these effects have been partially mitigated through design adjustments. The proposed data centers, however, represent a vastly different order of magnitude. Astronomers estimate that at peak visibility, tens of thousands of bright objects would traverse the night sky at any given moment.
“This feels like a complete reversal” of the progress made to manage existing satellite interference, says John Barentine, a dark sky consultant representing the concerned astronomers. Unlike current constellations that spend much of their time in Earth’s shadow, these data centers would orbit in high-inclination paths, constantly illuminated by sunlight—making them visible even at midnight.
Impact on Next-Generation Observatories
The timing of this proposal is particularly concerning, as the astronomical community has just begun to bring online some of the most advanced telescopes ever built. Facilities like the $10 billion Vera Rubin Observatory and the $2 billion Extremely Large Telescope are designed to push the boundaries of our understanding of the universe, but their observations could be crippled by the constant presence of orbiting satellites.
Astronomers would be forced to close telescope shutters for extended periods, degrading the quality of data and potentially rendering some observations useless. The sheer density of satellites—estimated at over one million—could mean more time spent avoiding interference than collecting meaningful data.
Environmental Concerns
Beyond astronomy, the project poses environmental risks. The rapid replacement of satellites—with old spacecraft burning up in the atmosphere every three minutes—would release significant amounts of pollutants, including aluminum oxide and lithium. This could contribute to ozone depletion and alter upper atmospheric temperatures. The frequent rocket launches required to deploy and maintain the constellation would further exacerbate these effects.
Regulatory Hurdles
The FCC has fast-tracked SpaceX’s application, bypassing a full environmental impact assessment. This means the burden of proof now falls on astronomers and environmental groups to demonstrate potential harm, rather than on SpaceX to prove the project’s safety. The limited timeframe for submitting objections—just weeks—adds further pressure to the situation.
SpaceX has not responded to requests for comment, leaving the scientific community and environmental advocates with urgent questions about the long-term consequences of this ambitious venture.
The proposal highlights a growing tension between commercial space development and the preservation of scientific research and environmental stability. If implemented, SpaceX’s orbital data centers could fundamentally alter our ability to study the universe and accelerate pollution in the upper atmosphere, raising serious questions about the future of space exploration.
