Monday, August 11, 2014

NASA SDO captures long solar filament

Credit: SDO

A very long filament hung across the sun’s surface for over a week from July 31 to Aug. 6, 2014.

The filament appears as the dark line going diagonally across the center of the sun in this image.

Filaments consist of clouds of cooler gas raised above the sun’s surface by magnetic forces.

Normally they exhibit a great deal of instability and break apart in days or even hours.

This image was obtained in the 191 Angstrom wavelength of extreme ultraviolet light, and has been tinted red instead of the usual brown colour.

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