Because the sun (Sol) has them all trapped in its gravitational field. All the planets revolve around the sun and so all the planet's satellites revolve around the sun, too.
There are quite a few more objects that are part of Sol's gravitational field- comets, asteroids etc.
There are eight planets and five dwarf planets in our solar system.
About 71% of the planets in our solar system have moons. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The dwarf planets in our solar system, such as Pluto and Eris, also have moons.
Two planets in our solar system have no moons: Mercury and Venus.
In our solar system, Mercury and Venus are the two planets which do not have moons.
Mercury and Venus are the only two major planets in our solar system without moons. They are the two planets closer to the Sun than Earth.Two of the five dwarf planets have no known moons : the asteroid Ceres and the Kuiper Belt object Makemake.Neither Mercury nor Venus have any moons.
There are eight planets and five dwarf planets in our solar system.
There are a total of 214 moons orbiting planets in our solar system.
there are 5 planets in the solar system which have moon and the planets are earth, mars,jupiter,saturn,and uranus
Moons are larger, obviously.
The answer is there are two planets which have no moons. Venus and Mercury
In our Solar System all planets have moons, except for Mercury and Venus.
Mercury and Venus do not have moons.
The "system" refers to the fact that there are several parts; in this case, the Sun itself, the planets, comets, moons, etc.
Sun, moons, planets, asteroids, meteors, and STARS! (Our galaxy MILKY WAY)
About 71% of the planets in our solar system have moons. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The dwarf planets in our solar system, such as Pluto and Eris, also have moons.
Two planets in our solar system have no moons: Mercury and Venus.
There are six.