What are the basic structures in which objects are grouped together in space?

The Stars, the Earth, the Solar System, the Milky Way, and the universe are some basic structures in which the objects in the space are grouped together. Stars group together to create constellation. We live on earth, our planet that evolves on its orbit around the sun. The Solar system is composed of planets, sun and other objects. The Milky Way Galaxy consists of billions of stars grouped together. And the Universe that holds billions of galaxies all throughout the space.