Jupiter, the largest planet in our solar system, currently holds the record for having the most known moons. Jupiter has a total of 79 confirmed moons. These moons vary in size, shape, and composition, with the four largest ones known as the Galilean moons: Io, Europa, Ganymede, and Callisto. These moons were discovered by Galileo Galilei in 1610 and remain among the most studied objects in our solar system. However, please note that new moons may be discovered in the future as our observational capabilities improve, so the exact number may change over time.