The Horizon above Picard Crater is strangely cloudy. The image below is an image of Picard and the horizon. Notice the white hill left of center. Can you see the faint wisps of something on the horizon, coming from the surface of crisium, in front of the hills?
We are dealing with fog in the image. What could cause that vaporous appearance? We have speculated that the fog could be the remains of a dome structural members and they extend above the Crisium floor over Peirce Crater There seems to be a partial arch on the right side. I am not aware of the mechanism that causes fog or vapor to form in arcs on an airless body like the moon.
I solarized this image to define the fog edges as well as I could. Notice there are variations in light or tone in the fog presumably caused by differing density. I called this feature "the cloud" for want of a better name. It looks temporary and ephemeral but I have no confirmation of this. It may be permanent in which case it is testable given the confirming image from another orbiter. Whatever it is, it is real. It is located approximately over another crater called Peirce. It appears suspended in places and substantial in others. It touches the mare in front of the horizon. This could be evidence of a destroyed habitat that used arches in its construction. Or could this be a linear outgassing event captured accidently by the Command Module. Initially, I ruled out an outgassing event because it seems to be too widespread. Then I realized that nobody has any experience with outgassing events on the moon so it was possible. But is there possible coorboration from the LTP watchers? Is this the feature that some astronomers have called a 15 mile long bridge in Mare Crisium? Can this feature be confirmed? Many questions. Few answers. It comes with the territory when you hunt anomalies on the moon.
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