Definition of Big Bang in US English:

Big Bang


  • The rapid expansion of matter from a state of extremely high density and temperature that according to current cosmological theories marked the origin of the universe.

    A fireball of radiation at extremely high temperature and density, but occupying a tiny volume, is believed to have formed around 13.7 billion years ago. This expanded and cooled, extremely fast at first, but more slowly as subatomic particles condensed into matter that later accumulated to form galaxies and stars. The galaxies are currently still retreating from one another. What was left of the original radiation continued to cool and has been detected as a uniform background of weak microwave radiation

    • ‘Thus, the big bang was not an explosion in space; it was more like an explosion of space.’
    • ‘The big bang theory, evolution, plate tectonics, and other scientific marvels fascinated me.’
    • ‘The big bang singularity is where all the mass of the universe used to be concentrated.’
    • ‘From a massive explosion, the big bang, the universe started and has been expanding ever since.’
    • ‘Indeed, all of the matter in the universe was created in the first few moments after the big bang.’
    • ‘What if all the dark matter during the first few minutes after the big bang had been dark ordinary matter?’
    • ‘Science however, has the big bang growing due only to internal factors: matter and gravity.’
    • ‘Gamma Ray Bursts are the most violent explosions the universe has seen since the big bang, astronomers say.’
    • ‘Cosmologists imagine the big bang theory by means of an analogy to an expanding balloon.’
    • ‘The big bang is the cosmic event that is theorized to have marked the origin of the universe.’
    • ‘In the initial stages of the big bang the universe existed in a highly compressed state.’
    • ‘The image contains stunning detail of the universe just after the big bang.’
    • ‘Furthermore the big bang and the big crunch are actually the same event, just viewed from different directions.’
    • ‘The big bang should have produced equal quantities of matter and antimatter.’
    • ‘These bursts may be the universe's biggest explosions since the original big bang.’
    • ‘They are the most violent events ever to have occurred in the universe, aside from the big bang itself.’
    • ‘This changes the whole view of the universe - big bang astronomy will never be the same.’
    • ‘For the first third of a million years or so after the big bang, matter and energy in the universe moved in lockstep.’
    • ‘Globally the symmetry is broken in any universe that is finite, or began with a big bang.’
    • ‘Some of the matter ejected by the big bang forms galaxies, like our very own milky way.’


Big Bang

/biɡ ˈbaNG//bɪɡ ˈbæŋ/