in three to five sentences, briefly describe how the big gang theory explains the origin and evolution of the universe. make it sound like an 8th grader.
The Big Bang theory is a way scientists have come up with to explain where the universe came from and how it has changed over time. They believe that a long time ago, all the matter and energy that exists today was squished into a tiny, hot and dense ball. This ball suddenly exploded, and that explosion was the Big Bang. After the Big Bang, the universe started expanding and cooling down, which allowed galaxies, stars, and eventually us to form!
