Critiquing a legend is a tough task, let me tell you.
I am a big fan of your art, and have been since the start of my own space art journey. This piece is no different. The detail in the nebula is awesome, the colors are very spacy and rare, which i really like.
It does, how ever, look an awful lot like the rest of your gallery. I mean, obviously you have your own style, but you can obviously pull it off superbly. I would try pushing your limits, trying to add something completely new to your works. Push not only the limits of the "norm" but your own limits as a designer. Throw us all a curve ball.

I also dont like the planet very much. The texture is good, but not very inciting. It seems a little dull to me. The planet itself also seems a bit flat. Maybe if you could see more of the planet, you could really relate the shadows with the highlights.

Other than that, i love it. Great overall work as usual.