No, not all the planets in our solar system have moons. In fact, out of the eight recognized planets in our solar system, only six have moons orbiting them. Here's a breakdown of the planets and their moons:
Mercury and Venus: These two innermost planets in our solar system do not have any moons.
Earth: Our planet, Earth, has one natural satellite called the Moon.
Mars: Mars has two small moons named Phobos and Deimos.
Jupiter: Jupiter is the largest planet in our solar system and has a whopping 79 known moons. The four largest moons of Jupiter, known as the Galilean moons, are Io, Europa, Ganymede, and Callisto.
Saturn: Saturn is famous for its magnificent ring system, but it also has an extensive moon system. Saturn has 82 known moons, with the largest and most well-known being Titan and Enceladus.
Uranus: Uranus has 27 confirmed moons. The largest moons of Uranus include Titania, Oberon, Umbriel, Ariel, and Miranda.
Neptune: Neptune, the outermost planet, has 14 known moons. The largest of these moons is Triton.
So, in summary, Mercury and Venus have no moons, Earth has one moon, Mars has two moons, Jupiter has 79 moons, Saturn has 82 moons, Uranus has 27 moons, and Neptune has 14 moons.