Exploring Astronomy Photography Of Outer Space Universe

The broadest definition of the universe is found in De divisione naturae by the medieval philosopher and theologian Johannes Scotus Eriugena, who defined it as simply everything: everything that is created and everything that is not created.
• Definition as reality
More customarily, the universe is defined as everything that exists, (has existed, and will exist). According to our current understanding, the universe consists of three principles: spacetime, forms of energy, including momentum and matter, and the physical laws that relate them.