What is big bang theory ?
Answers
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.
Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background.
While the majority of the astronomical community accepts the theory, there are some theorists who have alternative explanations besides the Big Bang — such as eternal inflation or an oscillating universe.
The phrase "Big Bang Theory" has been popular among astrophysicists for decades, but it hit the mainstream in 2007 when a comedy show with the same name premiered on CBS. The show follows the home and academic life of several researchers (including an astrophysicist).
Answer:
1- Big bang theory is also called expanding universe hypothesis.
2-Edwin Hubble in 1920 provide evidence that the universe is expanding.
3-In the begininig all matter forming the universe existed in one place in the form of a tiny ball withvanvun imaginable small volume ,infinite temperature and infinite density.
4-At the Big Bang the tiny ball exploded violently. This led huge expansion.HOPE IT IS HELPFUL TO YOU. MARK THE ANSWER AS BRAINLIST. THANKS! !!!!!!