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- Is the Big Bang a theory or a model? - Astronomy Stack Exchange
A big bang theory would have an explanation for what dark energy and dark matter is, for the photon to baryon ratio, and would incorporate, in a holistic way, the inflationary epoch It could make predictions about what will happen in the future - for example what will happen to the dark energy component (the big bang model can only make predictions using the parameters we have measured and an
- big bang theory - Center of the universe - Astronomy Stack Exchange
You're right; space did exist In fact, the universe was infinite in size at the moment of the Big Bang, and it still is This is because a common misconception is wrong: The Big Bang did not happen at a point Thinking of it like an explosion isn't correct You asked in a comment about the multiverse This is speculative, to say the least
- big bang theory - When was visible light for the first time created . . .
"A few minutes into the expansion, when the temperature was about a billion (one thousand million) kelvin and the density was about that of air, neutrons combined with protons to form the universe's deuterium and helium nuclei in a process called Big Bang nucleosynthesis Most protons remained uncombined as hydrogen nuclei
- Is the expansion of the universe proof of the big bang?
Whether the big bang is a theory or a model, it cannot be "proved" Scientific models and theories can only be falsified I think what you mean is - are there other pieces of evidence that are used to support the big bang model? Or possibly are there other pieces of evidence that support the idea that the universe was once very small and very hot?
- Unanswered big-bang-theory Questions - Astronomy Stack Exchange
big-bang-theory; Stilez 1,030; asked Jan 6, 2021 at 12:46 1 vote 0 answers 83 views
- big bang theory - Why can we still see 10 billion year old galaxies . . .
This also means that by looking at the farthest possible distance, we can see light which was created shortly after the big bang One such source of light is the ubiquitous background radiation which was probably created by the big bang itself It's easy to see because it fills all the gaps between the celestial objects
- What created the big bangs singularity? - Astronomy Stack Exchange
No one knows what came before the Big Bang if, indeed, anything did Theories include: The Ekpyrotic universe theory where the BB was the result of the collision of branes Various oscillating universe theories where the expansion of the universe ultimately reverses into a Big Crunch
- Has the Big Bang theory been disproven? - Astronomy Stack Exchange
There aren't any galaxies that formed before the big bang The most ancient galaxy yet observed by JWST is at a redshift of 13 2 (equivalent to a light travel time of 13 4 billion years) and formed 300 million years after the Big Bang The JWST has not observed galaxies at a distance of 13 8 billion years (in terms of light travel)
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