Leonard Hofstadter
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According to special relativity, the universe has no centre. Any nonrotating object travelling at any constant velocity slower than the speed of light is a valid frame of reference and in its frame of reference, the centre of the universe is the place where the big bang has occurred. There is no timelike line that all observers agree is the ...
May 15, 2023 · A model is a description of HOW. A theory is an explanation involving a human: a theory has to be understandable by experts, either in full or piece-by-piece. A model, on the contrary, needs no human; it may even be a mathematical, arbitrarily long and cumbersome description processable by a computer. Since the Big Bang contains both the WHY ...
Apr 23, 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 ...
May 18, 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.
Apr 14, 2021 · In the BBN section, they describe that the universe contains a mixture of photons, electron-positron pairs, and ... cosmology. big-bang-theory. cosmological-inflation. nucleosynthesis. particles. Astroturf. 1,111. asked Apr 19, 2021 at 18:56.
Nov 5, 2013 · 3. Yes, we do. The exact spot is: All of the universe. In the Big Bang, space-time itself expanded. To say that it took place only at a certain location, you would need something which is external to the entire universe. There is no such thing. Relative to us, we are inside the region that the Big Big started at.
Mar 18, 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.
Mar 12, 2021 · In the Big Bang Theory, there's a map on Sheldon & Leonard's refrigerator throughout the entire show It has false-color shadings of various kinds, with prominent craters, and so is presumably of some non-terrestrial body, perhaps Mars, the moon, or an asteroid.
Dec 19, 2016 · 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 emission from Hydrogen, known as the Lyman series. Since photons can only be released with ...
Jul 6, 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 ...
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