Study Finds Sun Could Produce Superflare Powerful Enough to Threaten Earth’s Technology
Natalie Krivova’s team analyzed the 300 strongest solar flares recorded between 2010 and 2016 using data from NASA’s Solar Dynamics Observatory. They identified a statistical link between flare energy and the size of the magnetic active region that spawns it. Applying this model to the biggest observed sunspot clusters suggests those regions could unleash a superflare. The study, published in Philosophical Transactions of the Royal Society A, stops short of estimating how often such an event might occur on the Sun.
A research group led by Natalie Krivova at the Max Planck Solar System Institute examined the most powerful solar eruptions captured from 2010 to 2016, relying on observations from NASA’s Solar Dynamics Observatory. Their analysis revealed a clear correlation between the energy released in a flare and the area of the associated magnetic active region, which is tied to large sunspots. By extending this relationship to the largest sunspot groups ever recorded, the scientists calculated that those regions could theoretically produce a superflare of unprecedented magnitude.
The findings, appearing in Philosophical Transactions of the Royal Society A, confirm the physical plausibility of such an event but do not provide a probability or frequency estimate for the Sun. Past research indicates superflares may happen on Sun-like stars roughly once a century, though this does not guarantee a regular pattern for our own star. A superflare striking Earth could cripple power grids, damage satellites, and disrupt global communications, underscoring the need for robust protective measures.
