Documents What is the Big Bang?

What is the Big Bang? The Big Bang theory is an effort to explain what happened at the very beginning of our universe about 15 Billion years ago. How many galaxies are there?…

Documents What is the Big Bang? The Big Bang theory is an effort to explain what happened at the very...

What is the Big Bang? The Big Bang theory is an effort to explain what happened at the very beginning of our universe about 15 Billion years ago. How many galaxies are there?…