Now this is intriguing! I have been at KN MUSCAE as there is only one landable planet in the middle of that nebula, 100% metal content, though a bit hot, but looking interesting.
However, when down on the surface I looked up and saw a planet's silhouette that wasn't registered when I scanned with the advanced scanner.
I am currently flying towards this and am sitting at 2 million LS and it has not got any bigger, or moved in relation to the stars behind. It could just be a graphical glitch. It is very visible sitting against the nebula and anyone else who comes out here will see it without bother.
I doubt it's Raxxla, if that is a planet it must be huge! I'm going with glitch.
View attachment 94409
Could be just a dark nebula in the background?