Final answer:
Hera, the wife of Zeus, was a key figure in Greek mythology and the goddess of marriage. She was known for her jealousy towards Zeus's other lovers and had a significant role in various myths and legends.
Step-by-step explanation:
Hera, the wife of Zeus, was one of the twelve Olympian gods and goddesses in Greek mythology. She was the goddess of marriage and often depicted as jealous and vindictive towards Zeus's other lovers. Her role in Greek mythology can be seen through various stories, such as the legend of the Milky Way, where her milk is said to have sprayed forth into the cosmos. Hera also had a significant presence in the Trojan War, where she played a part in the conflict between the Greeks and Trojans.