Check the making off below

Step by step

Research & Draft

I started making a few drafts on paper to define my initial concept & ideas. I then used Cinema4D to create a rough 3d sketch of the scene, this helped me to place elements into the composition & to define the overall perspective of the scene. The goal here was not to create the full scene in 3d, but just to get a base & export it in Photoshop.

Draft 3D

I used Cinema4d to compose the structure of the scene, mainly to help as perspective reference.

Renders

I made a few renders from the 3D scene and I kept everything layered for Photoshop. I quickly defined a bit more the ambiance & worked mainly on the volumetric lighting from the sphere and its texture.

Space scene

I used rock textures to help me painting the planets from scratch. I didn't work too much on this part because it was supposed to be a detail of the whole scene but it tooks me a few hours to complete. 

Photography

Then it was the time to incorporate my characters. I took the photographs outside as I didn't have time to go in the studio. The models used are friends & family. It was fun, thanks to them !

Research of videos

Here is some of the research I gathered for the videos within the sphere. This part was REALLY long as i wanted to make sure they were placed in a way where the images were linked together creating a 

The Holograms

I then prepared my holograms on separated PSD and included them as dynamic layers into the main file, it was perfect to keep the control over the time.