Welcome @nana1! 
From what you’ve said (and from Janelle’s comment in a past thread- thanks to @Garnet for bringing it back! 
), it sounds like “Solar, Lunar, Stellar” are concepts from Italian Witchcraft.
I’m not too familiar with Italian Witchcraft, but I found the following while searching:
From The World of Renaissance Italy by Joseph Byrne
From this, it looks like “solar, lunar, and stellar” relates to the formation of the year for various calenders.
If you find out any more, please let us know Nana!
Blessed be!