Thanks for that informative reply!
I've been trying to understand something about the discovery and use of new planets/asteroids. When you use asteroids in casting, does it just make the reading more precise- giving finer details on the information the other 7/8 planets provide? Or, do they give you new information- for example, Ceres giving information on female aspects that none of the other planets provide? If so, is it because humankind has developed new aspects that had not existed before, and so the discovery of new bodies accompanies the need to describe these new aspects that have emerged?
For example, I heard that Uranus represents innovation and was discovered at the beginning of the Industrial Revolution.