In May 2024, Earth faced its worst geomagnetic storm in over two decades. This storm caused interruptions in radio signals, affected power grids, and disrupted satellites. It came from an active solar region, NOAA 13664, which unleashed numerous solar flares in our direction. Scientists studied this region for 94 days, tracking its journey from formation to its eventual decline.
A global team used the Solar Orbiter, a spacecraft from NASA and the European Space Agency, to observe NOAA 13664 closely. This mission marked a significant achievement in solar research, providing the longest continuous observation of a single active area on the Sun.
“It’s a milestone in solar physics,” said Ioannis Kontogiannis, a solar physicist at ETH Zurich. His recent study highlights the remarkable findings from these observations.
Active regions on the Sun have powerful, tangled magnetic fields. They can release intense bursts of radiation and massive plasma eruptions, which can pose serious risks to our technology. When these eruptions head towards Earth, they can disrupt everyday life.
On May 10, 2024, a G5 geomagnetic storm, classified as extreme, struck Earth, causing widespread issues in the power grid and creating stunning auroras. This storm made atmospheric conditions denser, increasing drag on satellites in low Earth orbit.
Thanks to the Solar Orbiter mission, researchers could monitor this storm’s source in unprecedented detail. Typically, active solar regions disappear from view every two weeks as the Sun rotates. But this mission allowed scientists to track NOAA 13664 continuously from April 16 to July 18, 2024.
During this time, they observed the magnetic complexities of the region grow. This included witnessing the formation of a tangled magnetic structure just before the Sun released its strongest solar flare in over 20 years.
Kontogiannis noted the importance of understanding our Sun: “We live with this star, so it’s really crucial to study how it affects our environment.” Research into solar activity is more relevant than ever, given our reliance on technology vulnerable to these natural events.
As solar activity continues to intensify, experts suggest increased monitoring and preparedness for future storms to mitigate their potential impact. This kind of research helps us better appreciate the powerful forces of nature we coexist with daily. For more information about solar phenomena and their effects, check out NASA’s solar science resources here.
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geomagnetic storms,Solar Orbiter,Solar storm,the Sun
