Earth is the only planet with one moon.
Pluto use to be classified as a planet. It had only one discovered moon for a while, but astronomers have since found more moons belonging to Pluto.
There are four rocky planets, known as terrestrial planets. They are Mercury, Venus, Earth and Mars. Only Mars has more than one moon; the planet has two moons.
Only Mars has two moons. The other planets have either one moon, no moons, or many moons.
An infinite number of planets have more than one moon. Of the planets in our solar system, 3 (Mars, Saturn, and Jupiter), have more than one moon. Mars has two moons, Jupiter has at least 63, and Saturn has 60 not counting the asteroids that make up its rings.
Earth (with one moon) and Mars (with two moons). Mercury and Venus do not have any moons.
Venus is the only planet that does not have a moon.
Only the Earth has one moon.
Earth and Pluto
The question seems reversed. All but two of the planets have at least one moon. The only planets that don't have any moons are Mercury and Venus.
Within the Solar System, Earth is the only planet with one moon - The Moon.
Of the eight planets in oursolarsystem, only two do not have moons: Mercury and Venus. Earth is the only planet with only one moon.
Mercury and Venus are the only two planets in our solar system that do not have a moon.
There are four rocky planets, known as terrestrial planets. They are Mercury, Venus, Earth and Mars. Only Mars has more than one moon; the planet has two moons.
There are four terrestrial, or rocky, planets: Mercury, Venus, Earth and Mars. Of these planets, only Mars has two moons.
Only two planets have no moon. Mercury and Venus.
Only Mars has two moons. The other planets have either one moon, no moons, or many moons.
The only planet in our solar system with exactly one moon is Earth. For a long time Pluto had only one known moon, but is now known to have five moons. As of 2006 Pluto is no longer considered a planet.
Earth is the only planet with one moon. Pluto use to be classified as a planet. It had only one discovered moon for a while, but astronomers have since found more moons belonging to Pluto.