Definition: Our universe, the sum of everything that exists in the cosmos, including time and space itself.

Alright class, settle down now, let’s take a look, At a big word today, a fascinating book! We’re talking about “universe,” you see, Let's break it down for you and me. The dictionary gives us a clue, quite bright, "Our universe, the sum of everything in sight!" Think of it like this, my dear students true, It’s everything there is, for me and for you! “Cosmos” is a word that helps to explain, A vast and wondrous space, beyond our terrain. It's all the stars, the planets, shining bright, And galaxies swirling in the dark of night. And “time and space,” remember this with glee, Are part of the universe, for all eternity! Space is where things are , a place to roam, While time is how events unfold, like coming home. So, the universe includes it all, you understand? From tiny atoms to a giant hand— Of galaxies far, far away and deep, A cosmic mystery we’re eager to keep! Does that make sense, my scholars, clear and bold? Any questions bubbling, stories to be told?