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Nuclei
10 seconds after The Big Bang
Quarks combined to generate protons and neutrons. Two up quarks and one down quark make up a proton, while one up quark and two down quarks make up a neutron.
As the universe cooled, these neutrons and protons combined further to form hydrogen and helium nuclei. The hydrogen nuclei contained only a single proton while helium nuclei was made up of two protons and two neutrons. Deuterium, Helium-3, and lithium-7 were also formed in trace amounts.
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71 reads
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Leptons
1 second after the Big Bang
Electron-positron pairs were created and annihilated, leaving 1/billionth the amount of electrons and positrons behind.
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124 reads
Building Block Of Matter
The expansion had relatively slowed down. Due to quantum fluctuations subatomic particle like quarks were formed which were the building blocks of protons and neutrons. Quarks and antiquarks formed and annihilated each other. The remaining quarks accounted for on...
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112 reads
Inflation
10e-36 seconds after The Big Bang
The universe expanded at an inconceivable speed, from far less than an atom to enormous size.
The fundamental forces: Gravity (the force that...
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128 reads
Plasma
3 minutes after The Big Bang
The universe consisted of plasma (superheated state of ordinary matter) of nuclei, electrons, and photons; temperatures were too high for electrons to attach to the nuclei. Because photon...
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“Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.”
RICHARD FEYNMAN
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Atoms
3,77,000 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.
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Explore What's Next?
Formations of First Stars
https://bighistory.in/formation-of-stars-timeline/
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Cosmic Microwave Background
3,80,000 years after the Big Bang
Photons of light tangled in the plasma could now move freely and were released. The universe became transparent for the first time. This is known as cosmic microwave background that we can see even today.
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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...
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Threshold I: The Beginning
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Formation
Saturn took shape when the rest of the solar system formed about 4.5 billion years ago, when gravity pulled swirling gas and dust in to become this gas giant.
About 4 billion years ago, Saturn settled into its current position in the outer solar system, where it is the sixth planet from th...
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