solar system 
noun Astronomy
The collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.The moons of the outer planets in the solar system are also rich with various kinds of ices....
- Among the natural satellites that orbit the planets in the solar system, the moon is without doubt one of a kind.
- The next body to be discovered in the solar system was the minor planet Ceres, discovered in 1801.