Imagine you go back, neither the past, neither to the era of the dinosaurs nor even to the beginning of the first stars, but to the mome that the time itself began. Scieists tell us that our world is about 1.5 billion years ago with a huge eve called Bigbang Was born. This was the mome when the whole matter, energy, space, and time came from a very small, hot and dense spot. But this description raises a bigger question in our minds: “What was before Big Bang?” This question not only challenges the boundaries of our knowledge, but also confros us with concepts that we still do not have the necessary tools to understand.
World Birth Evidence: Why do we believe in Bigbang?
Before dealing with “Before Big Bang”, we need to know why scieists are so confide. Bigbang evidence is very strong and convincing and based on accurate observations:
- The expansion of the world: In the 1980s, great star Edwin Hubble discovered that the galaxies go away from us, and the farther away, the farther away. This phenomenon is exactly what is expected of a huge explosion. If we turn this process back in our minds, we reach a poi where the whole material of the world was accumulated at a dense poi.
- Cosmic Background Radiation (CMB): In year 2, two physicists, Arno Pensias and Robert Wilson, were working with a radio aenna, heard a weak and mysterious whistle throughout the sky. This sound was in fact the remaining heat radiation from the Bigbang, which had been very cold over the course of billions of years of expansion and became microwave waves. This radiation is a “echoes” or “fingerpri” from the mome of birth.
- The chemical composition of the world: Observations show that the early world was mainly of hydrogen and helium. These ratios are precisely in line with the forecasts of the Bigbang model, which says these two light elemes are produced in the early and early momes of the world.
The biggest problem of physics: the coradiction of relativity and quaum
To answer the main question, we must eer the world of theoretical physics. Currely, modern physics is based on two main theories, each of which acts in their own realm:
- Einstein’s general relativity: The theory, Gravity And it explains the structure of space-time on large scales, such as galactic galaxies and clusters.
- Quaum mechanics: This theory describes the behavior of matter and energy on very small scales, such as atoms and subatomic particles.
The problem is that these two theories are not compatible. At the mome of Bigbang, the world was so small, yet so dense that both theories had to work simultaneously. This great coradiction has led physicists to conclude that in order to understand Big Bang, we need a “quaum gravity theory” to unite these two theories.
Possible answers: from inflation to parallel worlds
Given this challenge, physicists have provided various theoretical ideas to explain what was “before”:
- Inflation Universe Model: The model says that before Bigbang, there was a “inflationary vacuum” that was expanding at an unimaginable speed. This inflationary vacuum was unstable and unpredictable, and at random areas it became a normal vacuum and, as a result, released enormous energy that created the same Bigbang. In this model, our world is just one of the infinite “bubbles” created in this expanding inflation vacuum.
- Cyccic Universe: This theory suggests that our world is part of an endless cycle of coraction and expansion. In this model, our curre world re -shrinks after a long time and returns to a dense poi (Big Crunch) to eveually make another Big Bang. In that case, “Before Big Bang” means “previous Big Bang”.
- The theory of string and multiple worlds: One of the main solutions to the combination of relativity and quaum, Risk theory Is. The theory says that the most fundameal compones of matter are not poi particles, but rather the vibrational of energy in two dimensions of space-time. According to one of the ideas of this theory, the Bran World, our world is only a three -dimensional “Brin” located in a larger space called Bulk. Perhaps Bigbang happened when our world has encouered another.
- Timelessness: Some physicists believe the question “What was before Big Bang?” Basically meaningless. They argue that time, like space, began with Bigbang, and before that, there was no concept of “time”. As a result, we cannot use the word “before” because there was no time when something happened.
Future of Physics: Reaching Final Theory
The answer to this final question leads us to a deeper understanding of reality. To achieve it, scieists need a complete and iegrated theory that can not only explain Big Bang, but also answer more fundameal questions: What is space? Where did the time come from? And how is the universe formed? Perhaps one day we can find these secrets by making more powerful particles or unprecedeed accuracy telescopes.
