what is big bang theorey
Answers
Answer:The big bang or "big bang" theory postulates that our universe arose from the colossal explosion of a simple infinitesimal point with an incalculable abysmal density. This happened approximately 14 billion years ago.
Explanation:
This theory is among the most accepted today to explain the origin of the universe. In addition, it states that the universe is constantly expanding.
Answer:
The model describes how the universe expanded from a very high-density and high-temperature state, and offers a comprehensive explanation for a broad range of phenomena,
This information helps astronomers determine the age of the universe. The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today
The Big Bang nucleosynthesis had left the universe with roughly 75% hydrogen nuclei, 25% helium nuclei, and trace amounts of lithium and deuterium nuclei. The plasma of positively charged nuclei and negatively charged free electrons filled the universe, trapping photons in its midst