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Alright, imagine this: you are 30 years old right now.
But if you travel 30 years back into the past—before your birth—what would you see? Nothing of yourself. You didn’t exist yet.

So, did you have any presence on Earth back then? The answer is no. Since you were not born, you had no existence here. And if that’s the case, how old would you be? The answer is clear—zero.

That shows us something important: our time, our age, begins at a starting point—our birth.

Now think about it in a bigger way. The Earth, the Moon, the Sun, even our galaxy—they must also have an age, just like us. If we could go back in time for them too, what would we actually see? Would they even exist? And if they did, what form would they take?

We humans are born from our mother’s womb. But where was the birthplace of the Earth, the Sun, and the Moon?

Scientists kept searching for this mystery. And after years of research, they presented a groundbreaking idea—the Big Bang Theory.

This theory explains how our beautiful Earth, the skies above, and the vast universe all came into existence.


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[Historical Observations & Singularity]
In 1927, the Belgian physicist Georges Lemaître was the first to propose that the universe is expanding—that galaxies are moving away from each other.

Two years later, in 1929, Edwin Hubble, through his observations, confirmed that the universe is indeed expanding. His findings supported Lemaître’s proposal. Hubble also showed something remarkable: the farther away a galaxy is, the faster it is moving away. This relationship was expressed through an equation, now known as Hubble’s Law.

Later, scientists discovered the Cosmic Microwave Background (CMB) radiation—the leftover heat from the earliest state of the universe. By observing the temperature and density of this radiation, they calculated the age of the universe to be about 13.8 billion years.

Now, since the universe is expanding and galaxies are moving farther apart, let’s imagine reversing time. If we rewind the universe, it would begin to shrink. Traveling back 13.8 billion years, time itself would contract, galaxies would come closer, and all the extreme heat and energy would concentrate in one place.

Finally, when time reaches zero, the universe collapses into a tiny point—smaller than an atom.
This moment is called the Big Bang, or the state of Singularity. And within that single point existed everything—our Earth, the skies, space, time, energy, light, and all known and unknown matter. It was an infinitely dense point of unimaginable power.

But here comes the big question: how did the vast universe emerge from that tiny dot?

Let’s try to picture it. Imagine you’re standing in a wide-open field. In less than a second, you blink your eyes, and suddenly the empty ground in front of you has vanished. And in its place, a vast ocean has appeared. Just as such an event happens without any prior plan, in the same way, that tiny point of immense energy exploded in a great blast.