Yes. Many stars have planetary systems.

Someone who studies planetary systems is called a planetary scientist

Aquarius is made up of 16 stars. The constellation contains no particularly bright stars. It does, however, have planetary systems in the stars within its borders.

The Solar System is the name of our particular planetary system around our star; Sol.

Many stars have been observed to have similar planetary systems and it can be assumed this is a common event in the Universe. Often neighbouring stars will form small groups called clusters, but the Universe is populated by huge groups of stars called galaxies which contain anything from a few million to trillions of stars.

The galaxis are bigger than planetary nebulae, that are bigger than planetary systems.