How SpaceX’s Million New Satellites Could Destroy the Night Sky

Megaconstellation Expansion and Orbital AI Data Centres

More than 10,000 Starlink satellites currently orbit the Earth, regularly crossing dark skies and streaking through research telescope images. SpaceX’s newly proposed constellation aims to place one million additional satellites into much higher orbits to handle heavy AI workloads, according to analysis published by The Conversation. Unlike previous iterations, these higher-altitude platforms will remain visible for longer periods throughout the night. SpaceX has provided only bare-bones information in its initial filings with the Federal Communications Commission. Researchers note that ground-based data centres face growing criticism for massive water and electricity consumption. According to The Conversation, SpaceX pitches orbital data centres as an environmentally conscious alternative, though critics point out this claim ignores the heavy environmental tolls of rocket launches, orbital operations, and eventual atmospheric re-entry.

Predicting the Impact on the Night Sky

To understand the scale of the disruption, researchers built updated simulations using orbital data from astrophysicist Jonathan McDowell’s website, aligning with the limited specifications found in the SpaceX filing. By scaling brightness models based on size jumps between Starlink V1, V2, and predicted V3 hardware, the team modelled how one million orbital data centres would compare to previously approved megaconstellations. Previous models by Lawler et al. in 2022 examined 65,000 satellites across four planned megaconstellations—including SpaceX’s Starlink, Amazon’s Kuiper, the United Kingdom’s OneWeb, and China’s Guowang—predicting that one in 15 visible points in the night sky would be an artificial satellite. The new simulation for a million-satellite constellation shows that artificial objects will completely overwhelm natural stars for large portions of the night and year across the globe. If we permit SpaceX to launch these satellites, we will see more satellites than stars — for large portions of the night and the year, throughout the world. This will severely damage the night sky for everyone on Earth. — The Conversation The human eye can detect fewer than 4,500 stars in an unpolluted night sky. Under the proposed million-satellite framework, the number of naked-eye visible satellites would jump into the tens of thousands, rendering natural constellations difficult to distinguish. Furthermore, researchers emphasize that this projection excludes additional large satellite systems filed with the International Telecommunication Union by various national governments in recent years.

Unresolved Regulatory and Environmental Concerns

The Conversation reports that SpaceX’s filing fails to account for collision risks in congested orbital pathways, increasing levels of atmospheric pollution from burning space hardware, and the unproven technology required to safely disperse waste heat generated by orbital computing clusters. The debate centers on balancing the commercial demand for orbital AI infrastructure against the preservation of a dark and quiet night sky for astronomy and human heritage.