What are the 3 epochs in matter Era?
There is a transition to the Matter Era since there is a presence and predominance of matter in the universe. It consist of three major epochs – Atomic, Galactic and Stellar which span for billions of years.
What was created in matter Era?
Matter gradually began to coagulate into atoms and eventually into clusters of atoms. From the start of the matter era, matter dominated radiation, and it has dominated radiation ever since, successively forming galaxies, stars, planets, and life.
What is radiation era and matter era?
In the Big Bang theory, the era that started when the gravitational effect of matter began to dominate the effect of radiation pressure. Although radiation is massless, it has a gravitational effect which increases with the intensity of the radiation.
What happened during quark epoch?
In physical cosmology the Quark epoch was the period in the evolution of the early universe when the fundamental interactions of gravitation, electromagnetism, the strong interaction and the weak interaction had taken their present forms, but the temperature of the universe was still too high to allow quarks to bind …
What happened in the hadron epoch?
Hadron Epoch. The Hadron Epoch lasted from 10^-6 seconds until one second (finally there!). The universe was now around 1 trillion degrees which allowed quarks to combine and form hadrons. Hadrons are subatomic particles made up of quarks, anti-quarks, and gluons.
What forces were part of the grand unification epoch?
During this period, three of the four fundamental interactions—electromagnetism, the strong interaction, and the weak interaction—were unified as the electronuclear force.
What is stellar epoch?
“stellar epoch” in the life of the Galaxy is completed ~1013 yrs after its formation, when the evolution of the. least massive stars comes to an end.
What is galactic epoch?
The timeline of the early universe outlines the formation and subsequent evolution of the Universe from the Big Bang (13.799 ± 0.021 billion years ago) to the present day. An epoch is a moment in time from which nature or situations change to such a degree that it marks the beginning of a new era or age.
What existed before quarks?
Research at RHIC and LHC are also now beginning to experimentally explore a mysterious state of matter that may exist before quark-gluon plasmas form, a dense mix of gluons known as a “glasma.”
How was quarks created?
1 The big bang and the micro bang A visualization of a high-energy collision between two lead nuclei in a ‘micro bang’ leading to the formation of a quark–gluon plasma. This new state of matter survives in the laboratory for 4 x 1023 seconds before it explodes.
What was the state of matter at the end of the photon epoch?
Atomic nuclei were created in the process of nucleosynthesis which occurred during the first few minutes of the photon epoch. For the remainder of the photon epoch, the universe contained a hot dense plasma of nuclei, electrons and photons.
What happened in hadron and lepton era?
By the end of the hadron era, all the other hadron species had either decayed or annihilated, leaving only protons and neutrons. Immediately after this the Universe entered the lepton era; both are subdivisions of the radiation era.
Was the early universe radiation or matter dominated?
The very early universe was radiation dominated After the early radiation dominance, and before the current dark energy dominance, the universe was matter dominated During the first few minutes of the Big Bang, the primordial fireball created matter by pair production
How did the density of matter and radiation affect the universe?
It was not always this way The early universe was radiation dominated density of radiation exceeded density of matter After about 50,000 years, the density of matter exceeded the density of radiation for the first time, eventually dominating the universe.
How did the universe become a matter-based universe?
After the early radiation dominance, and before the current dark energy dominance, the universe was matter dominated During the first few minutes of the Big Bang, the primordial fireball created matter by pair production
How does the temperature of radiation affect the creation of particles?
The higher the temperature of radiation, the greater the energy of photons, and the greater the mass of particles created in pairs No current theory of physics (quantum gravity) exists After 10 -43 seconds, temperature fell to 10 32 K Creation of protons and neutrons continued for about 10 -4 seconds