I hope it's okay I respond to what you've posted so far.
This is honestly very inspirational. The detail and work you've put into this so far is awesome, and the hard work is easy to see. It's paying off big time, and I've got to say, I'm not particular about the details (I honestly don't know what a locked moon is right now, but I'm gonna be doing more research) but it makes me want to learn more about this project of yours. Since I'm new, I can't really critique too much about things right now, but I kind of want to just spread positivity around at the moment. I think you're on the right track - I think it's okay to have some suspension of disbelief, it's fantasy after all. There's leeway for some disbelief in here, and I think you have a pretty good balance of it.
I also love the descriptions of the planets so far, and I'm eager to see what comes of this project of yours.