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12. Nov. 2016 · The measure in the middle of the image represents 1.5 billion light years. light travels in every direction, and at the time of the big bang, there was no light to travel anywhere, and early in the theory of the big bang, there were no 3D directions that we can conceive, no definition of straightness and edge, no distance in between anything in ...
23. Apr. 2014 · In the standard ΛCDM model of the Big Bang, the universe is infinite and has always been such. The Big Bang singularity happened everywhere, in the sense that far back enough in time, the density diverges to infinity at every place. But this is just a particular model--it assumes that the universe if spatially flat and is globally homogeneous ...
But after the universe had cooled (it took sometime between 10−36 10 − 36 and 10−32 10 − 32 seconds) the weak and electromagnetic fields split, and the first true photons formed. These photons didn't get very far before colliding with other particles that were being formed. As you note, it took nearly 400000 years until the universe ...
14. Apr. 2021 · I understand that cosmic microwave background radiation is remnant of the universe after 380,000y of the origin. To me, this radiation is still a wave which has a microwave frequency and I also ... galaxy. universe. light. big-bang-theory. cosmic-microwave-background. Giorgi Lagidze. 315.
15. Mai 2023 · $\begingroup$ The big-bang "whatever" as currently used/discussed in astrophysics does not include an understanding of WHY. There is no (accepted) theory of why the big bang happened - it is presented as a deus ex machina and the model follows from that. That is why, despite being outvoted 2.5:1 in a popularity contest, I maintain it is a model ...
18. März 2017 · The Planck epoch was the earliest epoch of the Universe and lasted until 10−42 10 − 42 seconds after the Big Bang — that's 200 Planck times, which are the shortest meaningful measurement of time. During this epoch, the entire Universe was at 1.417 ×1032 K 1.417 × 10 32 K, which is the Planck temperature.
19. Okt. 2015 · As relativistic effects will cause clocks to run slower, a frame of reference must be chosen when considering the time of the "big bang". There is a natural and convenient choice of reference frame, based on the cosmic microwave background. The cosmic background appears to be extremely red-shifted light, indicating it is receding from us very fast, due to the expansion of the universe. If we ...
6. Juli 2018 · 13. 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. Quantum fluctuation models where a zero-net-energy ...
19. Dez. 2016 · There are two explanations for the quantization that do not require exotic cosmologies. The first is the large scale clustering of galaxies that traces the cosmic web. The walls and filaments formed in this web leads to groupings of galaxies around specific redshifts along the line of sight. The second explanation is the quantisation of ...
18. Mai 2014 · 4. In and of itself, no the expansion of the universe is not proof of the big bang. Other theories could be constructed that would also be explained by the expansion. For example Fred Hoyle and others proposed the Steady State Theory which proposed that new matter was constantly being created thus causing the expansion.
