A recent scientific study led by NASA heliophysicist Dr. Denny M. Oliveira has revealed that solar eruptions are playing a significant role in the premature reentry of SpaceX’s Starlink satellites. The findings come at a time when solar activity is nearing its peak in the current solar cycle.
According to Dr. Oliveira, solar eruptions—specifically geomagnetic storms triggered by coronal mass ejections (CMEs)—increase atmospheric drag in low Earth orbit (LEO), causing Starlink satellites to spiral downward and burn up earlier than expected. The study, published on May 19, 2025, examined the fate of 523 Starlink satellites re-entering Earth’s atmosphere between 2020 and 2024.
“During geomagnetic storms, the upper atmosphere expands, and density increases significantly. This leads to enhanced drag, accelerating orbital decay,” said Oliveira in a recent interview.
The most dramatic example occurred in February 2022, when a powerful geomagnetic storm caused 40 of 49 newly launched Starlink satellites to fail within days, burning up in Earth’s atmosphere. More recently, in October 2024, the Starlink-1089 satellite reentered the atmosphere 10 days ahead of schedule following heightened solar activity.
The current solar maximum, a peak phase in the Sun’s 11-year activity cycle, is causing increased concerns for satellite operators. Starlink satellites, which operate at relatively low altitudes of around 550 km, are particularly vulnerable to such disturbances.
SpaceX, which plans to deploy over 30,000 satellites as part of its global broadband constellation, now faces increasing pressure to enhance satellite durability and design systems to cope with geomagnetic stress.
NASA scientists and space weather experts stress that better forecasting models and adaptive satellite technologies will be crucial in the coming years to safeguard space infrastructure amid rising solar volatility.
