The universe is the vast expanse that encompasses all matter, energy, space, and time. It is everything that exists, including galaxies, stars, planets, and all forms of life. The universe is incredibly large and complex, spanning billions of light-years and containing countless celestial objects. Scientists believe that the universe originated from the Big Bang, a cataclysmic event around 13.8 billion years ago that created space, time, and all the matter and energy in the universe. While much is still unknown about the universe, scientific investigations and observations continue to reveal fascinating information about its composition and evolution.
