We don’t know. That’s the hypothesis aspect of Scientia. Our current working hypothesis(es) and theories have not been invalidated so far and thus, they depict

We don’t know. That’s the hypothesis aspect of Scientia. Our current working hypothesis(es) and theories have not been invalidated so far and thus, they depict the most accurate model we have. But it’s just a model: data that we get artists to turn into pretty “space” pictures. If the public had a real understanding of astronomy and space exploration it would neither be seen as interesting or worth funding.