The only way I can tie this into the Artemis lore is by assuming Artemis once started the same way we as a player once started. Remember #231187661T, the Boundary Failure lore, Telamon. What you are seeing are the remains of another crash site. According to the naming in the source files, we can assume it was a player/traveller. Considering we did at some point find Artemis’ crash site including ship, I doubt these are left-overs from yet again a crash by Artemis, unless they were a terrible pilot
The ‘scene’ of debris you are seeing there is called ‘STARTSCENE_PLAYER’ in the files, it looks like this:
The main parts of this scene refer to ‘DEBRISWARRIOR_RARE’ textures. I am not sure why specifically ‘warrior’ though. If I look at the textures used in the folder, the red colouring appears to be made of the ‘BURNMARKS’ texture, with a coloured mask applied by the same name, which is red. This makes sense for debris left after a crash. The hexagon shaped object uses a texture called ‘TECHNOLOGYCONTAINER’, we are likely to assume this is another part left after a crash. The fact these parts float is because they have no physics applied, like most objects.