The Big Bang theory is an explanation for how the universe began. It says that a long time ago, all matter and energy was packed together into a tiny space that was very hot and dense. Then, there was a huge explosion that created everything we see today, like the stars, planets, and galaxies. After the explosion, the universe started expanding and cooling down, which allowed galaxies to form and all the amazing things we see in space today.
The big bang theory says that the universe started from a tiny and super hot point called a singularity. This singularity exploded and expanded, creating everything we see in the universe today. It tells us that the universe is still expanding even now, and that galaxies, stars, and planets formed over billions of years. It's like a giant explosion that happened a really long time ago and keeps getting bigger every second.
According to the Big Bang theory, the universe began around 13.8 billion years ago as a very hot and dense point called a singularity. It then started expanding and cooling down, which led to the formation of matter and energy. As the universe expanded, galaxies, stars, and planets were formed. This theory helps us understand how our universe came into existence and how it has been evolving ever since.
