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.
In our solar system, Mercury and Venus are the two planets which do not have moons.
the orbit of planets around the Sun in the Solar systemthe orbit of moons around their planets in the Solar system
Six out of the eight planets in our solar system have moons. (Mercury and Venus are the only two that do not.)
In our Solar System, 173 moons around planets are recognized, as well as over 200 moons around minor planets.
the solar system has many stars,some are planets,moons,asteoids,metors/meteorites, and planetoids.
Out of the planets in our Solar System, Jupiter has the most moons. It has 63 confirmed moons.
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
Mercury and Venus do not have moons.
Sun, moons, planets, asteroids, meteors, and STARS! (Our galaxy MILKY WAY)
The "system" refers to the fact that there are several parts; in this case, the Sun itself, the planets, comets, moons, etc.
In our solar system, Mercury and Venus are the two planets which do not have moons.
There are six.
169 moons.
About 120 planets are in our solar system.