On a winter evening, an estimated 98,000 satellites—possibly more than the 500 stars.

SpaceX's proposed space data-center satellite constellation could place roughly 98,000 satellites brighter than magnitude 5 in the winter evening sky at 30°N if deployed as modeled, versus only about 500 stars at the same brightness threshold, according to the "Rings in the Sky" paper revised October 27. The study analyzed FCC filings from SpaceX, Blue Origin and Cowboy Space, calculating brightness from satellite designs and orbital placements rather than actual observations. Blue Origin's Sunrise would account for up to 51,600 satellites and Cowboy Space's Stampede for 20,000, making the combined filings a step change in orbital object counts. The findings matter because satellite mega-constellations are moving from communications into space-based data centers, multiplying the number of reflective objects in low Earth orbit. What to watch next is whether the FCC imposes brightness or orbital-shell conditions on these applications, and whether follow-up measurements confirm the modeled glare.