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  • Superflares from the Sun: A Looming Threat to Satellites and Power Grids
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Superflares from the Sun: A Looming Threat to Satellites and Power Grids

Nero December 13, 2024 2 min read

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Scientists Warn That Earth Is Overdue for a Catastrophic Solar Flare Event


The Science Behind Superflares

Superflares are massive bursts of energy from the sun’s surface, releasing 100 times more energy than the Carrington Event of 1859. The Carrington Event, the most intense geomagnetic storm ever recorded, disrupted telegraph systems and caused auroras visible as far south as the Caribbean. Modern technology, such as satellites and power grids, is far more vulnerable to such solar storms.

An international team of scientists, using NASA’s Kepler telescope data, studied 55,000 sun-like stars to understand how frequently these superflares occur. They observed nearly 2,900 superflares on over 2,500 stars, suggesting a superflare from our sun is statistically overdue.

Frequency of Superflares: Updated Insights

Earlier research suggested superflares occur on sun-like stars every 1,000 to 10,000 years. However, the recent analysis indicates these events happen more frequently, approximately once per century. Dr. Sami Solanki from the Max Planck Institute explains that by studying thousands of similar stars, researchers can better estimate the sun’s flare activity over time.

Dr. Natalie Krivova emphasized that extreme solar events are part of the sun’s natural behavior. This raises concerns about humanity’s preparedness for such an event.

Modern Vulnerabilities to Solar Storms

If a superflare of Carrington-scale intensity struck today, the consequences could be devastating. British researchers estimate a 71% chance the UK’s power grid would face significant disruption. Mobile networks, GPS systems, and air travel would also suffer, grounding airlines and cutting off communication.

Historical events underline this risk. In 1989, a geomagnetic storm caused a nine-hour blackout in Quebec. In 2003, Sweden experienced an hour-long outage. Even in May 2024, a powerful solar storm degraded Starlink’s satellite services and expanded the visibility of the Northern Lights to Ireland.

Clues from Earth’s Past

Evidence of prehistoric superflares exists in tree rings and ancient glacial ice. These natural records reveal spikes in atmospheric radiation consistent with solar storm activity. Such data reinforces the belief that superflares have struck Earth before and could do so again.

Understanding these historical events helps scientists predict future risks. While precise timing remains uncertain, experts agree humanity must prepare for the inevitable.

Superflares from the sun represent a natural but significant threat to modern infrastructure. Improved understanding of their frequency and impact highlights the urgent need for resilience planning. Satellites, power grids, and global communications depend on proactive measures to mitigate the effects of the next solar superstorm. Scientists’ warnings are clear: it’s not a matter of if but when.


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