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Compex Magnetic Eruption Witnessed by Solar Observatories

2 Aug 2010, 02:09 UTC
Compex Magnetic Eruption Witnessed by Solar Observatories NASA
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This morning, at 08:55 UT, NASA’s Solar Dynamics Observatory (SDO) detected a C3-class flare erupt inside a sunspot cluster. 100,000 kilometers away, deep within the solar atmosphere (the corona), an extended magnetic field filled with cool plasma forming a dark ribbon across the face of the sun (a feature known as a “filament”) erupted at [...]

Solar Dynamics Observatory view of the solar disk shortly after eruption (NASA).
This morning, at 08:55 UT, NASA’s Solar Dynamics Observatory (SDO) detected a C3-class flare erupt inside a sunspot cluster. 100,000 kilometers away, deep within the solar atmosphere (the corona), an extended magnetic field filled with cool plasma forming a dark ribbon across the face of the sun (a feature known as a “filament”) erupted at the exact same time.
It seems very likely that both eruptions were connected after a powerful shock wave produced by the flare destabilized the filament, causing the eruption.
A second solar observatory, the Solar and Heliospheric Observatory (SOHO), then spotted a huge coronal mass ejection (CME) blast into space, straight in the direction of Earth. Solar physicists have calculated that this magnetic bubble filled with energetic particles should hit Earth on August 3, so ...

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