Who is this weightless astronaut? What is she doing ? What is she thinking about?
Her mind wanders. The simplicity of her dress (the exterior) contrasts with the variety of what she sees (the interior). She can not look at us; her invisible eyes were completely absorbed by a vision of the universe. She was sucked into the afterlife, consumed by the intensity of the emotions she saw there. The substance is non-existent, as everything is played out in the character’s mind.
More prosaically, this astronaut can be seen as a person in meditation. Her concentration has brought her to an altered state of consciousness, where she explores her subconscious.
If the projection did not present a colorful universe, this person would be in someone’s psychological grip, or a prisoner of a sect. She is a person who has lost none of her physical integrity, but whose spirit has been sucked in by a foreign body.