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“This Upper Limit is an Illusion”: NASA Study Warns There May Be “No Limit” to How Solar Storms Impact Earth
Our modern society depends heavily on communications and power networks that are highly susceptible to interference from solar storms, making these volatile space weather events a paramount concern for scientists.
Now, it turns out there may be more to fear than previously realized. Scientists are discovering that there may be no ceiling to the devastating effects solar storms may have on Earth, overturning what little sense of security may exist as a mere mathematical anomaly.
In a recent paper published in Nature, a NASA-led team discovered that the potential impact of solar storms on our technological infrastructure could be substantially more severe than currently recognized.
Solar Storms Reconsidered
According to new research, any past limitations perceived regarding the impact of solar storms on our planet are purely an illusion, which arises from imprecise data collection.
Previous observations of electric currents in the Earth’s upper atmosphere during solar storm events suggested a ceiling to how far they could increase. Yet the new paper claims that uncertainties in solar wind data are falsely giving rise to this idea.
The researchers say that the distance of the spacecraft taking solar wind measurements is the issue. Those spacecraft are millions of miles closer to the Sun than the Earth is, meaning that by the time those winds reach Earth, they have weakened considerably. Additionally, instrument error and the effects of the local plasma and field conditions all come into play.
All this, the researchers say, creates a mismatch between the measured strength of the wind and its effects on our planet’s electrical currents.
Correcting For Distance
The new findings contain one significant difference from existing research: they relied on observation platforms much closer to Earth to collect data, which included spacecraft such as NASA’s MMS and THEMIS.
Launched in 2007, THEMIS consists of five satellites that target the Earth, rather than the Sun, to study our planet’s magnetosphere and auroras. MMS consists of four spacecraft that also study the Earth’s magnetosphere.
Existing charts show the impact of solar winds on Earth leveling off at a certain threshold, which scientists had believed was the maximum saturation possible. However, in new solar wind strength data collected much closer to Earth, more accurately reflecting power at the time of impact, this saturation point disappeared. Instead, this data revealed that there is no ceiling on how heavily solar storms can charge the Earth’s electrical currents.
Solar Storm Impacts
Another crucial element in the NASA-led research is the statistical concept of regression to the mean, which holds that extreme measurements often change as more data come in. In this case, as more data on solar storm impacts on Earth recorded from various distances were collected, the plating effect disappeared. The authors note that similar effects occur in other areas of research, such as climate studies and chronic medical pain.
These new findings present a major challenge to our understanding of space weather. Scientists will now need to conduct many further observations to determine if any such ceiling exists. The threat to our infrastructure may be severe, as satellite communication underpins our modern society, not to mention the power grid, which keeps our world running.
For now, NASA continues to monitor solar storms to prepare for their potentially dangerous effects on our infrastructure, and in light of the new research, the potential for future challenges ahead may be greater than previously realized.
The paper, “Regression to the Mean Can Explain Saturation of Geomagnetic Storms,” appeared in Nature on July 15, 2026.
Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.
