Earth's moon is called Luna and can be seen without a telescope. Jupiter has at least 63 moons, most of which are small asteroids captured by its strong gravity. Mars has at least 3 known moons, while Saturn reigns as having the most moons of any planet with 34. Uranus has many undiscovered moons yet to be found due to its distance. Neptune's 13 known moons were discovered in 1989 when NASA sent a satellite, though more likely exist. Pluto, now classified as a dwarf planet, has 2 moons that orbit it.