WALKABOUT ON THE MOON?

I just downloaded and watched the series of full moon shots that Laurent Laveder had compiled and was shown on Spaceweather.com. On a hunch (or gut feeling) I watched for any area of the Moon's surface that moved out of sinc. with the rest of the Moon's surface.

SURE ENOUGH !

In the top left corner, there is an area that has a 'similar' shape to the shape of Australia… And it goes 'walkabout'. If you watch the sequence --watch the top left area (as in my attached JPEG), you will see an unexplainable wobble movement in the land mass in that area [capture]. Wot be there that wobbles ?