Milk of Hera

The Origin of the Milky Way by Jacopo Tintoretto.

The myth of the milk of Hera (Ancient Greek: Ἥρας γάλα, romanizedHḗras gala) is an ancient Greek myth and explanation of the origin of the Milky Way within the context of creation myths. The standard telling goes that the mythical hero Heracles, as an infant, breastfed from an unsuspecting Hera, the goddess of marriage and Zeus's wife, who threw him away, causing a little bit of her milk to splash and create the galaxy with all its stars.