no moons of Jupiter have been discovered with moons of their own. Jupiter is known to have a vast system of moons, with 79 confirmed moons as of that time. These moons vary in size, with the four largest moons known as the Galilean moons: Io, Europa, Ganymede, and Callisto.
While these moons are significant in size compared to other moons in the solar system, none of them have been observed or confirmed to have moons orbiting around them. The dynamics of moon formation and stability in such complex systems can be quite challenging, and no natural satellites around Jupiter's moons have been detected thus far.
However, it's worth noting that scientific understanding and observations can evolve with time. Future discoveries and advancements in technology may bring new insights and reveal previously unknown details about the moons of Jupiter or other celestial bodies in our solar system. So, it's always exciting to stay informed about the latest developments in planetary science.