Solar storms found to 'profoundly modify' the foreshock—the region that extends beyond the magnetic field.
The eerie"song" created when a solar storm hits Earth's magnetic field has been recorded by scientists. By analyzing data from the European Space Agency's Cluster spacecraft, researchers discovered how solar storms"profoundly modify" the region of space just beyond the magnetic field—a finding that could help find ways to mitigate their potentially devastating impact.known as the solar wind.
It is estimated that if a big solar storm hit Earth today, the economic impact could reach trillions of dollars. Understanding exactly what happens when a solar storm hits could help the development of mitigation strategies., a team of scientists led by Lucile Turc, from the University of Helsinki, Finland, used data from Cluster—four identical spacecraft that have been orbiting Earth since 2001 and have flown through the foreshock repeatedly.
Artist impression of a solar storm hitting the foreshock. Earth is the dot to the left surrounded by the protective bubble of the magnetic field.The foreshock is the first region that the particles from the sun reach on their way to Earth. During a collision with a solar storm, the foreshock was found to release magnetic waves. These waves were then transformed into frequencies that could be heard as audible signals—allowing them to hear the"song.
"Our study reveals that solar storms profoundly modify the foreshock region," Turc said in a statement."It's like the storm is changing the tuning of the foreshock."
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