Starlink Satellites May Harm Ozone Layer, New Research Warns

New research from the University of Southern California (USC) suggests that Elon Musk’s Starlink satellites might pose a threat to the ozone layer as they deorbit. Published in the Geophysical Research Letters, the study highlights concerns that these satellites could trigger harmful chemical reactions in the atmosphere.

Starlink satellites are designed to burn up in the atmosphere at the end of their operational life, releasing aluminium oxide gas. According to researchers, this gas could weaken the ozone layer by reacting with chlorine and destroying ozone molecules. The ozone layer, located in Earth’s stratosphere, plays a crucial role in absorbing most of the sun’s harmful ultraviolet radiation.

“Only in recent years have people started to think this might become a problem,” said Joseph Wang, one of the study’s authors. “We were one of the first teams to look at what the implication of these facts might be.” The environmental impact of satellite reentry remains poorly understood, with this study shedding light on potential risks.

Since its inception, SpaceX has launched over 6,000 Starlink satellites to provide global internet coverage. Each new model of these satellites is heavier, contributing to an estimated 17 tonnes of aluminium oxide particles released into the atmosphere in 2022 alone.

The growing demand for global internet coverage is driving the launch of more communication satellites. SpaceX has been granted permission to deploy an additional 12,000 Starlink satellites, and other tech companies, including Amazon, plan to launch thousands more in the coming years.

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