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Threshold II: Formation of the First Stars


Formation of the First Stars

Formation of the First Stars


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The Big Bang

Consider something unbelievably tiny, unbelievably dense, and incredibly hot. Then, suddenly, space, time, and all molecular matter burst in ways that no words can express. What is known is that the Universe expanded at an unfathomable rate in a fraction of a second. Some recognised subatomic par...

Cosmic Microwave Background (CMB)

3,80,000 years after The Big Bang

As the universe expanded, plasma grew cooler and cooler. The universe cooled down further to 3000 K, making it possible for the nuclei in the plasma to gain electrons and become full-fledged neutral Hydrogen and Helium atoms.

Cosmic Dark Age

The entire universe was made up of Hydrogen and helium gas clouds with no stars and planets.

After the release of CMB, nothing in the Universe radiated light until around 200 million years after the Big Bang when the first stars began to form.

First Stars

About 200 million years after The Big Bang

Due to gravity, hydrogen and helium clouds began to clump together. Tiny imperfections. Little knots, wrinkles, and flaws began attracting nearby particles of matter. The clumps grew, became more massive, and attracted more particles. Hence, it mad...

The gravity that was trying to squash the star together was pushed back by the fusion at the center which created a balance. Within a few hundred million years after the Big Bang, the first generation of stars, known as Population III stars, were formed. After CMB, these stars were the first sour...

The First Galaxies, clusters and superclusters

About 1 Billion years after The Big Bang

Stars formation happened almost everywhere in universe. Thus we have billions and billions of stars. Galaxies were formed out of these swirling clouds of stars and gas in space. Gravity sends these objects careening into one another...

Explore: What Comes Next

The Chemicals Cook up

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