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.
Earth has only one moon, Luna, and Pluto has a twin, Charon.
Only Mars has two moons. The other planets have either one moon, no moons, or many moons.
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.
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.
Of the eight planets in the Solar System, the only two that have no moons are Mercury and Venus. Earth has one moon, Mars two, and the gas giants Jupiter Saturn Uranus and Neptune have dozens between them - no one really knowing just how many there are as new ones are being discovered each year. The first member of the minor planets beyond Neptune - Pluto - is now not designated as a major planet. It has at least three moons. There are many more minor planets beyond Pluto that have moons - and again these are being discovered yearly.
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.
Only Mars has two moons. The other planets have either one moon, no moons, or many moons.
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.
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 only two planets within our solar system that have no natural satellites (i.e. moons). They are Venus and Mercury; all other planets have at least one moon.