Jupiter was named after the Roman king of the gods, who was also known as Zeus in Greek mythology.

Here's why:

* Ancient Observations: Jupiter is the largest planet in our solar system and very bright in the night sky. This made it easily visible to ancient civilizations.

* Importance of Gods: Ancient cultures, like the Romans and Greeks, attributed celestial bodies to their gods.

* Similarities: Jupiter, the king of the gods, was seen as fitting for the largest and most prominent planet in the sky.

So, the name "Jupiter" has been used for this planet for centuries, honoring the mighty ruler of the Roman pantheon.