noun
universe
YOO-nih-vers/ˈjuːnɪvɜːrs/
All that exists within space or a particular realm.
Stars, planets, and galaxies fill the vast space of the universe.

Etymology
“Turned into one” became “all things” understood as a single whole. Universe names that totality: everything that exists, considered together rather than as separate things.
In context
by measuring this deceleration all the matter and energy that make up the universe would be revealed
More examples
- Scientists study how the universe expands.
- The two novels take place in different fictional universes.
- Her garden is a tiny universe of insects and plants.
Forms
universe · universes
universal adjective — Relating to everyone or everything.