Here's another. And here is my take on it.
This planet has incurred a temporary satellite. Its orbit is greatly elliptical, but at each pass over tens of thousand of our years it grows ever closer to its adopted parent world. But it is on a collision path, with impact probably another tens of thousands of years.
During the final stage of orbit it would be visible by day and night, sometimes appearing as this size or only slightly smaller. This is no city or mountain sized hunk of space rock. At is major axis it is nearly 900 kilometers across.
When it eventually impacts this world, the entire surface will be transformed. And reformed. Such as our own Earth has done. Many times over.
Credits to Ulco (Dune) for the terrain. Hannes for the basic color layout. Jordan (WAS) for the wonky moon. And me for the atmo and clouds
. Except for the cirrus. Those are Mick's (mhaze)...
