How many gods and constellations exist in Greek mythology?

Twelve gods, there are too many others.

The origin of Aries: Aries

King Atamas of Filja married Princess Nipera, and they gave birth to twins. However, the king had an affair with Princess Ginova of Tebe, drove Princess Niepera out of the palace and made Nova his new wife. When Princess Khynova had a child of her own, she decided to kill the only twin left by her predecessor, Princess Niepera (the elder brother is Prica and the younger sister is Hurley). She bribed the fortune teller to complain to the king: If the children born to the former princess are not sacrificed to Zeus, the gods will be furious and there will be famine this year. When Nipola knew about it, he asked Zeus for help, so Zeus sent the golden ram in the sky to the other side of the sky with his two brothers and sisters. Because the speed was too fast, my sister fell into the sea, and the ram looked back at my sister and guarded my brother, thus forming today's Aries.