Very beautiful piece. When I see this piece, I see the future of humanity going beyond Earth, whether is to live on other Habitable worlds, or to Caeliform distant worlds. The city combined with the background world fits so well together compositionally considering the extreme perspective of the buildings.
Good work with the atmospheric perspective, as we look back further, the skyline becomes whiter and grayer. The colors just go so well together, blue and oranges give the viewer a sense that the cold nights are waking up to the warmth of morning on this distant world.
As a suggestion, I probably would make your logo "GTGRAPHICS.DE" slightly transparent or/and even have the white worlds a little toned down to a orange or blue color.
Buddy out of all the amazing ambient science fiction I've seen, so far this is the BEST one. Not only is this digital masterpiece is cool with futuristic fashion, but it's also beautiful with it's sunset sky effects in addition to the terrestrial planet in the background. The sun setting in the horizon with it's intense sunshine was created flawlessly. I've seen many beautiful terrestrial lands with planets in the sky but this one is beautiful and futuristic at the same time which is cat-killingly outstanding. The skyscrapers are really good looking and they seem like they are possible to be built in the distant future. Even the river splitting the city was a good idea. The only thing I would have loved to see is that there are a bunch of highway ramps and that the skyscrapers were on a seemingly bottomless fog of clouds with a few more planets seen in a beautiful and deep sky. But either way this is still a masterpiece and I'm eternally grateful that this was even created. Keep up the good work.