frankly, some things cannot be explained, including because the true God doesn't give us to speak about them in-depth, and they can be only spiritually discerned/experienced/appraised, or as St Paul says:
1 Corinthians 2:14-16 "the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned. But he that is spiritual(i.e. truly spiritual) judgeth all things, yet he himself is judged of no man(i.e. yet he himself cannot be denounced by anyone). For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ."
i.e. even if i know something of those things, i cannot tell you what they are, or at least i can talk not much about anything of that; in shot, i can tell you that each of the true Saints has the Holy Spirit more than anyone else i.e. that is not a true Saint, but as for the "seven spirits" and "stars", it is hard to be explained, though there are also Angels/Saints that can explain a lot about these things, personally i don't go into such details when speaking about God and spiritual things, or at least for now, because what is given to me (to know) is that more important for us is to show love for our neighbor and (to) be righteous, but righteousness doesn't mean science, but means to think about the prosperity of all humans, not only about the prosperity of some
Blessings