What does the term universe encompass?

The term "universe" is comprehensive in its scope, meaning it refers to the totality of existence. This includes not just celestial bodies such as planets, stars, and galaxies, but also all forms of matter, energy, and life that comprise the cosmos. By using the term "everything," it captures the vast complexities of the universe, which includes not only astronomical objects but also terrestrial life forms like animals and plants. This broad definition is essential for understanding the universe as an interconnected system where all elements, both cosmic and earthly, are included.

The other choices limit the scope significantly by only referencing celestial bodies or specific astronomical phenomena, which does not accurately reflect the full extent of what the universe encompasses.