Milk giving you powers has been a thing irl mythos, Heracles was said to gain his super strength from drinking Hera's milk and her milk splatters became stars, the term galaxy comes from galaxias which mean Milky Way, yes the Galaxy we are in the Milky Way Milky Way. In some myths, such as the Serbian Vila or Appalachian tales, fairies were sometimes said to offer breast milk to human children or adults. Drinking this milk was believed to convey extraordinary strength or, sometimes, to cause the mortal to become dizzy or enchanted.
The Egyptians believe that stars are breast milk thus why Nut and or Hathor both sky goddesses and cow goddesses.