how many planets in our solar system have only one moon

Only one planet in our solar system has exactly one moon: Earth.

Quick Scoop

• Mercury: 0 moons.

• Venus: 0 moons.

• Earth: 1 moon → the only planet with exactly one natural satellite.

• Mars: 2 moons (Phobos and Deimos).

• Jupiter, Saturn, Uranus, Neptune: each has many moons, not just one.

So if you are asking “how many planets in our solar system have only one moon?” the answer is: one planet – Earth.

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