There are hundreds of moons in our solar system — even a few asteroids have been found to have small companion moons. … Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons.

Do inner planets have moons?

Generally, inner planets are smaller and denser than their counterparts, and have few to no moons or rings circling them. The outer planets, meanwhile, often have dozens of satellites and rings composed of particles of ice and rock.

Do all four inner planets have moons?

The inner planets, or terrestrial planets, are the four planets closest to the Sun: Mercury, Venus, Earth, and Mars. From left to right, they are Mercury, Venus, Earth, and Mars. Unlike the outer planets, which have many of satellites, Mercury and Venus do not have moons, Earth has one, and Mars has two.

Most of the major planets – all except Mercury and Venus – have moons. Pluto and some other dwarf planets, as well as many asteroids, also have small moons. Saturn and Jupiter have the most moons, with dozens orbiting each of the two giant planets.