Ours is planet Earth. Stellar domain - Planets are part of solar systems. Encompassing a solar system involves the interaction between different planets, travel beyond one's planetary sphere, and concern for the life cycle of one's star. We are in the solar system of the Sun. Stars are born or die.
Civilizations expand or decay.
We are in the outskirts of a galaxy known as The Milky Way. Even a universe has cycles, of expanding and contracting. Everything in it is in one way or another inter-related. Dimensional domain - There are many alternate universes in different dimensions, existing at different vibratory frequencies. One can travel between them, or become aware of one's multi-dimensional existence amongst them.