About the Origin of the Universe
It was darkness in the beginning. Darkness filled every point of the vast nothingness, which extended endlessly. And in the dark nothingness, there was a small spherical physical mass, weighing trillions and trillions and trillions of tons. The physical sphere was being condensed and densified by some dark energy within itself.
The peak moment of densification. The whole physical mass could not shrink into itself more than that.
Then….bang- the Big Bang. The huge cosmic explosion. The physical mass was thrown away in to space due to the force of explosion in all 360 degree directions in all possible planes of all possible dimensions from the center of explosion.
It was a soup of quark- gluon plasma in the beginning at infinitely high temperature. Gradually lighter subatomic particles (leptons, which include electrons and photons) and then heavier subatomic particles (baryons, which include protons and neutrons) and were formed. As the universe started cool down, proton and neutron combined to form deuterium. Deuterium combined with another neutron to form tritium. Addition of one more proton into tritium produced helium nucleus. Particle physics story on primordial state of universe goes on like that.
What was before big bang?
I remember the story of St. Augustine, bishop of Hippo Regius (ancient name of the modern city of Annaba, Algeria). The pagans asked him, “what was God doing before he made the universe?”
St. Augustine was so calm to answer, “He was busy creating Hell for people like you.”
Scientists often suggest that big bang was the beginning of all- in turn it means any question on what was before big bang is nonsensical.
Time did not start with big bang. Time and space were there even before big bang. Time is the continuum of changes, events and growth or they are the manifestations of time. In the continuum of space- time, many big bangs and big crunches staged alternately. So there is no sense in asking the age of the universe- just rephrase the question. Ask the age of the “current” universe.
The universe is expanding. Of course, due to the force of cosmic explosion, each and every unit of the universe is moving away from the center of explosion.
But how long? How far?
Universe today is dominated by a mysterious form of energy known as dark energy, which apparently permeates all spaces. The space between the physical masses (galaxies, stars and planets) of the universe is filled with this dark energy. Dark energy is holding the universe together by acting against the force of cosmic explosion. The force of cosmic explosion will soon fade out and the dark energy will dominate the force of cosmic explosion and will tend the physical masses of the universe to shrink to the center of previous explosion. The process of expansion is reversed and the universe will re-collapse ending as a singular entity to the state where it all began and then initiate another big bang.
The universe would exist for ever, passing through alternate phases of creation (expansion- Big Bang) and destruction (contraction- Big Crunch) and will continue in the continuum of space and time without an end.
Many scientists believe the universe is linear- expanding in one direction. They base their conclusion on the WMAP (Wilkinson Microwave Anisotropy Probe) studies on Cosmic Microwave Background radiation (CMB). These radiations are the forensic remains for the big bang. WMAP data shows that the fluctuations in microwave background are about 10% stronger on one side of the sky than the other. When an explosion of cosmic level happens, how the explosive force can trigger out the physical mass into one direction only, where all the three dimensional spaces are not restrained. Those who believe in linear model of universe argue that if the origin of universe was Big Bang and the universe is expanding in liner way, then the end of universe will be Big Freeze. It will be a one time show on the cosmic stage of space and time.
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