In episode 16, how does Eva 01 get into the Sphere/Shadow after “falling” into the Sea of Dirac?
While a bit complicated to explain fully, it is easiest to think that when Unit 01 was dragged into the Sea of Dirac, it was actually entering another universe, that is kind of parallel with our own. So if Eva 01 was to move about in the parallel universe, then “come back” into our universe, it wouldn’t be in the same place that it entered that universe (in other words, spacial coordinates are the same in both universes). So when Unit 01 arrived back in this universe, it arrived actually inside the sphere. Like with a lot of things in NGE, this is up to interpretation.