I wonder if it is similar to the planet Gallifrey? Maybe more like Sedna.
The Doctor: “Well, perfect to look at, maybe. And it was, it was beautiful. They used to call it the Shining World of the Seven Systems. And on the continent of Wild Endeavour, in the mountains of Solace and Solitude, there stood the Citadel of the Time Lords. The oldest and most mighty race in the universe.”
“The sky’s a burnt orange,with a citadel enclosed in a mighty glass dome, shining under the twin suns. Beyond that the mountains go on forever. Slopes of deep red grass, capped with snow.”
The Doctor: I lied to you. ‘Cause I liked it. I could pretend, just for a bit, I could imagine they were still alive underneath the burnt orange sky. I’m not just a TIme Lord. I’m the last of the Time Lords. The Face of Boe was wrong. There’s no one else.
Martha: What happened?
The Doctor: There was a wara Time War. The Last Great Time War. My people fought a race called the Daleks. For the sake of all creation. And they lost. We lost. Everyone lost. They’re all gone now. My family. My friends. Even that sky. Ah, you should have seen it, that old planet. The second sun would rise in the south and the mountains would shine. The leaves on the trees were silver. When they caught the light every morning it looked like a forest on fire.
https://www.youtube.com/watch?v=uz_1HQY32LA
https://www.youtube.com/watch?v=YhsPOwGoFhg
Only 6 months until the latest doctor starts his reign. I can’t wait.