Definitions for big-bang theory
big-bang the·o·ry

Princeton's WordNetRate this definition:0.0 / 0 votes

1. big-bang theory, big bang theorynoun

   (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

WikipediaRate this definition:0.0 / 0 votes

1. big-bang theory

   The Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models of the Big Bang explain the evolution of the observable universe from the earliest known periods through its subsequent large-scale form. These models offer a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure. The overall uniformity of the Universe, known as the flatness problem, is explained through cosmic inflation: a sudden and very rapid expansion of space during the earliest moments. However, physics currently lacks a widely accepted theory of quantum gravity that can successfully model the earliest conditions of the Big Bang. Crucially, these models are compatible with the Hubble–Lemaître law—the observation that the farther away a galaxy is, the faster it is moving away from Earth. Extrapolating this cosmic expansion backwards in time using the known laws of physics, the models describe an increasingly concentrated cosmos preceded by a singularity in which space and time lose meaning (typically named "the Big Bang singularity"). In 1964 the CMB was discovered, which convinced many cosmologists that the competing steady-state model of cosmic evolution was falsified, since the Big Bang models predict a uniform background radiation caused by high temperatures and densities in the distant past. A wide range of empirical evidence strongly favors the Big Bang event, which is now essentially universally accepted. Detailed measurements of the expansion rate of the universe place the Big Bang singularity at an estimated 13.787±0.020 billion years ago, which is considered the age of the universe.There remain aspects of the observed universe that are not yet adequately explained by the Big Bang models. After its initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later atoms. The unequal abundances of matter and antimatter that allowed this to occur is an unexplained effect known as baryon asymmetry. These primordial elements—mostly hydrogen, with some helium and lithium—later coalesced through gravity, forming early stars and galaxies. Astronomers observe the gravitational effects of an unknown dark matter surrounding galaxies. Most of the gravitational potential in the universe seems to be in this form, and the Big Bang models and various observations indicate that this excess gravitational potential is not created by baryonic matter, such as normal atoms. Measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to an unexplained phenomenon known as dark energy.

ChatGPTRate this definition:0.0 / 0 votes

1. big-bang theory

   The Big Bang Theory is a scientific explanation about how the universe began. It proposes that about 13.8 billion years ago, all the matter and energy in the universe was concentrated in an extremely tiny point, which then began rapidly expanding in a hot explosion. This event marked the birth of the universe as we know it today. The theory is widely accepted among scientists based on a broad range of observational evidence.

Matched Categories

1. • Cosmology
   • Scientific Theory

How to pronounce big-bang theory?

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How to say big-bang theory in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of big-bang theory in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of big-bang theory in Pythagorean Numerology is: 7

Examples of big-bang theory in a Sentence

1. Kaley Cuoco:

   To see that be the pinnacle of this season was really cool, we’ve all come such a long way. ‘ THE BIG BANG THEORY ’ FINALE RECAP : SHELDON AND AMY STRUGGLE WITH LONG DISTANCE AND TEMPTATION That was n’t the only behind-the-scenes moment that the cast shared with the Comic Con crowd. According to Entertainment Weekly, Kaley Cuoco and Galecki revealed the circumstances surrounding an on-set injury from a prank gone awry. In an effort to shock the cast and crew during a scene in which the two characters were fighting, Galecki jokingly pretended to punch his co-star in the face. However, the actress' head accidentally caught a chair while she was falling and the end result was stitches in her eye brow. ‘ THE BIG BANG THEORY ’ ACTRESS MAYIM BIALIK RECEIVES ‘ DOOGIE HOWSER ’ ROYALTY CHECK FOR TWO CENTS.

2. Erica Lynn Rosenthal:

   ( The Big Bang Theory) featured a fairly diverse cast of characters, including an immigrant and numerous female scientists, but rarely explicitly addressed social issues, which can be alienating to Reds.

3. Mayim Bialik:

   Being part of ‘ The Big Bang Theory ’ for gosh, almost a decade of my life, was a thrill, it was a real thrill as an actor to be employed for that long and to be employed at something that I enjoyed so much with people that I enjoyed working with so much. As a neuroscientist in real life, I really enjoyed going to a job where our intellect is appreciated and our characters ’ intellects were appreciated.

4. Kelly Kahl:

   ’Young Sheldon’ has made a huge impact on our schedule in the short time it’s been on the air, while the show’s DNA is clearly rooted in ‘The Big Bang Theory,’ ‘Young Sheldon’ has staked out its own place in the TV universe with a unique creative tone, brilliant writing and a gifted multi-generational cast. We can’t wait to see Chuck, Steve, Jim and Todd’s vision for how the Cooper family deals with Sheldon growing a year older…and smarter.

5. Kunal Nayyar:

   Look, next season, as it stands on our contract, could be the last season of 'Big Bang Theory,' to be completely honest … I know people are going to want to know what happens after season 10. I don’t know what’s going to happen.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=big-bang theory
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Big-bang_Theory
3. ^ ChatGPT
   https://chat.openai.com