About making open world space level like Star Citizen, Eve Online or Elite Dangerous.

Hi to everyone who sees this post. I am new into game development scenes, so i am still learning things that is in unreal engine 5 (And also English is not my first language). What I learned is that player need to create levels to let players to experience the game, even for the main menu. It is like a physical object in real life. But what I learned there is a limit in the level size. It breaks because of the limit of floating point number.

My question is how I make a map like eve online or star citizen where the map is unlimited in one level, where no tricks like loading screen or stationary player like floppy bird where player is still and every stationary object is moving. But the limit of level size is not what I want but cant ignore. I want to know how they trick or make such level where player doesn’t realize that they were tricked. I don’t get how world partition works in this case but please educate me in this subject.