These shots show one of the many asteroids in the Main Asteroid Belt between the orbits of Mars and Jupiter. A small fleet of spacecrafts are lined up and approaching a docking area seen as glowing lights in the "center" of the large rock. The dust surrounding the asteroid is the remains of an extensive excavation of its interior.
This, along with the next scene, is by far the most speculative part of this short film. For one thing, this particular asteroid is fictional and although I suspect there are many like it out there, it is built from scratch without any specific object as reference. But also, these scenes, rather than showing the nature of an actual place, are there to visualize the possibilities of human engineering and construction.
The concept is that this asteroid has been hollowed out on the inside, pressurized and filled with a breathable atmosphere. Then it has been put into a revolving spin, creating artificial gravity on the inside by centripetal force. It works sort of like inside a spinning washing machine, only much larger.
A famous construction like this is presented in Arthur C. Clarke's novel "Rendezvous with Rama" but
again, I have Kim Stanley Robinson to thank for inspiration here. His novel "2312" takes place in many of these inverted worlds which he calls "terraria". In the next scene, I show what a "terrarium" might look like from the inside.
This whole scene is built in CG, with no particular reference used.