Definitions
There is 1 meaning of the phrase
Big-Bang Theory.
Big-Bang Theory - as a noun
(cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature
Example Sentences
"The big-bang theory states that the universe began from a hot and dense state approximately 13.8 billion years ago."
"Many scientists believe that the big-bang theory provides the most plausible explanation for the origin of the universe."
"The big-bang theory suggests that all matter and energy in the universe were initially packed into a singularity."
"According to the big-bang theory, the universe underwent rapid expansion known as cosmic inflation in its early stages."
"The big-bang theory predicts the existence of cosmic microwave background radiation as leftover from the initial explosion."
