How Our Universe Started 🌌 | The Big Bang Explained 💥

Added: 2026-05-05

[00:00:00]Hello everyone, welcome back to my channel. Today I'm going to talk about one of the most fascinating and mind-blowing scientific theories, the big bang theory.

[00:00:12]What is big bang theory? The big bang theory explains how our universe began around 13 billion years ago. The entire universe was a one tiny extremely hot ball. Imagine everything around you, stars, planet, galaxies, even space, all inside a one tiny ball. Then suddenly something happened. The universe blasted like a bomb and started expanding very much.

[00:00:47]But it is not a it was not a bum explosion. This the tiny ball was expanding itself. And suddenly there was a big bang. The universe was started cooling tiny particle like proton, electrons and neutrons made and these particle combined to form the first simple atom mainly the hydrogen and helium atom. Then after millions of years ago gravity pulled atoms together from stars and galaxies.

[00:01:16]These star lit up the universe for the first time. Our own galaxy the milky way was formed much later. inside it our solar system earth and every planet in our solar system created this means everything we see today comes from the big brand theory but you have a question how do scientists know all these one strong evidence is the microwave reaction radiation in the in the space the heat from the big bang theory still present in the space and another another proof is the galaxy's are still moving far to each other. The universe is still expanding even today. This discovery was made by Edwin Hubel and Stan King Honking to deeply understand the beginning of the universe. But here's come very interesting question.

[00:02:14]What is before the big bang theory? The truth is scientists are still searching for the answer. Some scientists say that there is nothing at all. Other believe there could be previous universe. Now let me tell you something even more interesting about the future. Right now the universe is expanding. But some scientists believe that in the far very far future this expansion might slow down and reverse. Reverse mean it will come closer to each other. All galaxy including our milky way galaxy, stars, planet will come together and everything will collide with each other into a very small dense point just like the beginning. This idea is called the big crunch. The big bang in which the big bang happened. The big crunch means the big crunch means everything collide to each other and maybe there will be a new beginning again. Isn't this very mind-blowing? So the big bang theory tells us that stars, planet, galaxies and even we came from one tiny ball.

[00:03:20]This tiny ball was tiny tinier than my this the space between my two fingers.

[00:03:27]If you really enjoyed this video, don't forget to like, share and subscribe. And thank you for watching. Bye. And share your thoughts in the comment section.

[00:03:37]You can also share your comment. And you can also share your questions in the comment section. Bye.