Pick of The Week
 
 

Here and Gone (November 4, 2005)


Hi-res TIF image (1.9M)


Hi-res TIF image (1.9M)

A rather small prominence began to appear in profile above the edge of the Sun in extreme ultraviolet light on November 1, 2005. It had been visible against the Sun since it rotated into view on Oct. 22. Prominences are clouds of somewhat cooler gases that float above the Sun's surface and move with the Sun's rotation. Their formation is controlled by magnetic forces. They can last for hours to weeks.

This one began to erupt as you can see some hours before the first image shown (00:19 UT on Nov. 2). Something had caused it to become unstable and, poof, it began to break away and accelerate. The last wisps of it can be seen in the next image taken at 07:19, just six hours later. At this point, we would be correct in stating that it was an eruptive prominence.

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