Friday, February 20, 2015

APOD 3.5

APOD 3.5
                Fibrils Flower on the Sun
See Explanation.  Clicking on the picture will download
 the highest resolution version available.

There are times the sun may resemble a rose, such as when a specific color of red light emitted by hydrogen. The pinkish color is seen on some regions of the solar chromosphere. The color-inverted image was taken in October 2014 and displays the active solar/sunspot region 2177 (which survived several days before evolving yet again) on the sun. The "petals" are actually magnetically confined tubes of hot plasma (known as fibrils - some of which extend longer than the diameter of the Earth). Due to the way this picture was taken, the central region fibrils are seen end-on and surrounding regions are filled with curved fibrils (huge plasma tubes seen over the Sun's edge- spicules,when in passive regions- mottles).

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