Just a placeholder for time bean.
Noticed this past week the projection of the sun pin hole style on one wall in the house when the sun is coming up in the morning.
It is a disc maybe 3" in diameter on the wall. That said a few days back it appeared to display some solar anomalies which has piqued my interest in space weather.
It looked like a coronal hole or just something floating in front of the sun.
What are coronal holes?
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The dark shape sprawling across the face of the active Sun is a coronal hole, a low density region extending above the surface where the solar magnetic field opens freely into interplanetary space.
Credits: ESA&NASA/SOHO
Coronal holes are variable solar features that can last for weeks to months. They are large, dark areas (representing regions of lower coronal density) when the sun is viewed in EUV or x-ray wavelengths, sometimes as large as a quarter of the sun’s surface. These holes are rooted in large cells of unipolar magnetic fields on the sun’s surface; their field lines extend far out into the solar system. These open field lines allow a continuous outflow of high-speed solar wind. Coronal holes tend to be most numerous in the years following solar maximum.
Noticed this past week the projection of the sun pin hole style on one wall in the house when the sun is coming up in the morning.
It is a disc maybe 3" in diameter on the wall. That said a few days back it appeared to display some solar anomalies which has piqued my interest in space weather.
It looked like a coronal hole or just something floating in front of the sun.
What are coronal holes?
[ATTACH]67343[/ATTACH]
The dark shape sprawling across the face of the active Sun is a coronal hole, a low density region extending above the surface where the solar magnetic field opens freely into interplanetary space.
Credits: ESA&NASA/SOHO
Coronal holes are variable solar features that can last for weeks to months. They are large, dark areas (representing regions of lower coronal density) when the sun is viewed in EUV or x-ray wavelengths, sometimes as large as a quarter of the sun’s surface. These holes are rooted in large cells of unipolar magnetic fields on the sun’s surface; their field lines extend far out into the solar system. These open field lines allow a continuous outflow of high-speed solar wind. Coronal holes tend to be most numerous in the years following solar maximum.
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