I have seen this only once, and have been playing the game on and off for a good few years now.
It was on the Alderaan screen on the Galactic map. Normally you can see another planet or distant moon, silhouetted against the sun. On this one occasion there was a second planet or moon about the same size to the right of the normal one. It was also moving. As it was moving very slowly I went to get a cup of tea. On my return the other object had moved closer to Alderaan. Over the next 15 minuets or so it moved closer, passing behind the planet towards the lower right corner of the screen. By this time it was still pretty small but you could see it was grey. In never got big enough however to clearly see any details.
I had a quick search on the forums for this but did not find anything. I can't be the only one to have seen this. Is this old news? Has anyone else seen this?
S