sravna
Well-known member
FYI, the following seems to be a puzzle to me:
"The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe, which is calculated to have begun 13.798 ± 0.037billion years ago."
"The farthest distance that it is theoretically possible for humans to see, called the observable universe, is about 93 billion light years in diameter." (Universe - Wikipedia, the free encyclopedia)
So, if we can observe up to 93 billion years, can we not see what happened before the Big Bang which is only 14 billion years old?
I will answer the puzzle part. The light years mentioned is a unit of distance and not time. A light year is the distance traveled by light in one year. For example if the distance of the light originating from the big bang to the earth is more than what the light could travel in 93 billion years then we can still not observe what happened close to big bang even though the universe is only 14 billion years old.
Last edited: