Its interesting that your should mention this as very recently the games backers have had criticisms of the promotion cinematics, that being they don't look quite like the game and the accusation being they are prerendered in another application like Blender.
CIG have addressed this in the past saying no it is all in engine and in real time, this time they went further
explaining there are hidden graphics settings in the engine that are used for the cinematics..... and that was that, or so it would seem.
They must have thought more about this as in the build that is currently in testing they have unlocked those setting for the player to apply, where as before the settings topped out at high and very high they now go to ultra, there are now also about twice as many setting options, and sure enough
if you set all of it to ultra the game looks like the cinematics... with a huge cost in performance, you need a 5090 to run them at 4K 60+.
They also explained they don't actually have a way to generate the planets and assets in something like Blender. They have to use the engine.
The screenshot here were taken in the current live build, 4.4, 4.5 with the new graphics options launches probably next week and the shadow option are now unlocked.
The game is in constant flux, 90% of the needed tech is in and they are now building it out, 2025 has been by far the biggest year yet with new star systems, new game mechanics, PVP and PVE dungeons added ... 11 major patched this year, what's left is crafting and base building (development on those has just been completed) the final planetary tech (Genesis) wich will be added to planets in the new star system just launched as a test bed for that (Nyx) and then the rest of all existing planets and moon’s reworked to it.
And finally Dynamic Server Meshing. after that a couple more star systems and it will be locked in and made the 1.0 release
This is not the end of it, that's just making the game stable and viable, new star systems will keep getting added to it for as long as the game lives.