Tähtikeskus

Tähtikeskus is a Finnish term that translates to "star center" or "center star." It is most commonly used in the context of astronomy, referring to the central star of a planetary system or a stellar cluster. In a planetary system, the tähtikeskus is the star around which planets, asteroids, and other celestial bodies orbit. Our own Sun is an example of a tähtikeskus for the Solar System.

The term can also be applied to stellar clusters, such as open clusters or globular clusters, where a particularly bright or massive star might be considered the tähtikeskus, although more often the term refers to the gravitational center of the cluster itself. In some specialized astronomical discussions, a tähtikeskus might also be used to describe the central region of a galaxy, particularly a spiral galaxy, where a supermassive black hole often resides. The precise usage can depend on the specific astronomical phenomenon being discussed.