While looking through the XPOW archive, I came across an interesting quiet Sun XPOW. The XPOW highlights the dynamic nature of the
quiet Sun. One feature caught my eye as it moved across the field of view. A shadowy-looking structure sweeps over a bright X-ray region.
The above movie shows the shadow.
There are only two things that could cause this. First, an absence of X-ray emission which doesn't seem likely, or the shadow
consists of very cool and dense plasma. From this video it looks likely that the latter is the explanation. X-ray shadows are
some of the most interesting and cool structures on the Sun.
Another example of a quiet Sun structure is QS Dark Structure.
Keywords: Quiet Sun, Bright Point