I hate myself for posting this. I wouldn't do if the image hadn't been bugging me for ages. It was the particles that float around the barnacles and (I think) the probes that nudged me finally in this direction.
I'm only putting this here because then it's here. I don't think there's necessarily anything in it, and I don't see it leading anywhere useful.
The circle shows a 10x10 grid that is barreled, and divided into quadrants. There is a black line that is not attached to, or curving with the grid, but runs from the edge to the centre of the circle. This, along with the curve and the two additional straight lines have been reminding me of something but I've only now been able to figure out what it is. It reminds me of the view through a microscope. The lensing causing the flat grid to barrel, the black line being an indicator needle common to a lot of microscopes. Even the lines outside feel somehow like they are controls for optics - a zoom, or lens selector, and a focus.
So what if the particles are ships.
What if the probes and artifacts are stations.
What if the barnacles are planetary ports or cities.
Maybe the message is trying to get us to appreciate things at a different scale.
I don't think any of that is true, but it's an itch I can't scratch, so it's only fair that some of you itch too.