Cách sử dụng
The universe is everything that exists, including all matter and energy, space, and time. It is the vast expanse that contains galaxies, stars, planets, and all other celestial objects that we can observe. It is often used to describe the entirety of existence, from the smallest particles to the largest structures in the cosmos. We use the word 'universe' when talking about space and the things in it, such as stars and planets, and also when discussing the big picture of existence and the mysteries of the universe.