It's empty. For the last few months the image has shown noctilucent cloud coverage over the poles. NLCs form in the summer months when, as strange as it sounds, the mesosphere is cold enough to allow it.
I saw these noctilucent clouds on lots of evenings over the past few months (and in most summers that I can recall). Some of the pictures I took can be found here, here and here.
I made a movie of all the daily daisies during this NLC season and assembled a short movie.
The data was assembled from the website of the AIM-CIPS instrument. You can see that the coverage increases from nothing in May, to a maximum in early July and then decreasing to nothing again in August.
As we approach the end of the summer the mesosphere begins to warm again the clouds disappear. No more NLCs until the next season begins sometime near the end of May 2014.
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Dr Adrian Jannetta. Amateur astronomer, maths teacher and science enthusiast.