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Why does the existence of the cosmic redshift lead to the big bang picture of the universe?
Wiki User
∙ 10y ago
If the distance us and all distant galaxies is increasing, and the amount of increase depends almost entirely on the distance between us and these galaxies, then this distance has been increasing for at least ten billion years. This strongly supports, but does not prove, the idea that space itself has been expanding, not only over that time period but during the time before. If space HAS been expanding at a (more or less) constant rate since its beginning, then we would observe several things that we do observe (CMBR, hydrogen-helium ratio, no quasars near us). If, on the other hand, our Universe has maintained a (more or less) constant density for all eternity (as Einstein initially believed), then we would NOT observe these things.
Hubble Red Shift can be explained (with some difficulty) in a Universe of eternally constant density; other things we see can not be.
Wiki User
∙ 10y ago
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What helped scientist determine the age of the universe?
The redshift of the cosmic microwave background radiation
How do cosmic background radiation the chemical composition of the universe redshift of light and movement of galaxies support the theory of the Big Bang?
Redshift: The only reasonable explanation for the redshift is that most galaxies are moving away from us.As for the cosmic background radiation and the chemical composition, both of these closely match what is expected from the models about the Big Bang.
How does redshift connect to cosmic bakcground radiation?
Redshift refers to the stretching of light waves towards longer wavelengths, which occurs when an object is moving away from an observer. Cosmic background radiation, also known as the cosmic microwave background (CMB), is residual radiation from the early stages of the universe that has been redshifted over time and is now observed as microwave radiation. The redshift of the CMB provides strong evidence for the expansion of the universe and supports the Big Bang theory.
What is the evidance for the big bang?
The expansion of the Universe, as can be seen by the redshift of distant galaxies; also, the cosmic background radiation. Read the Wikipedia article on "Big Bang" for more details.
What is an adjective from the word universe?
Universal (pervading the universe) or cosmic(relating to the universe).
What two discoveriessupported the big bang theory?
Supporting evidence includes:* Redshift of distant galaxies, usually interpreted to be due to the expansion of the Universe. * The cosmic microwave background radiation closely agrees with what is expected from the Big Bang theory. * The distribution of elements (and isotopes) in the Universe closely agrees with what is expected from the Big Bang theory.
Cosmic function of the Universe?
"Cosmic" means "related to the Universe"; so this question doesn't really make much sense.
What are voids and where are they found in the universe?
Cosmic voids are vast spaces between filaments (the largest-scale structures in the Universe), which contain very few or no galaxies. Voids typically have a diameter of 10 to 100 megaparsecs; particularly large voids, defined by the absence of rich superclusters, are sometimes called supervoids. They have less than one-tenth of the average density of matter abundance that is considered typical for the observable Universe. Cosmic voids as a topic of study in astrophysics began in the mid-1970s when redshift surveys became more popular and led two separate teams of astrophysicists in 1978 to identifying superclusters and voids in the distribution of galaxies and Abell clusters in a large region of space. The new redshift surveys revolutionized the field of astronomy by adding depth to the two-dimensional maps of cosmological structure, which were often densely packed and overlapping, allowing for the first three-dimensional mapping of the Universe. In the redshift surveys, the depth was calculated from the individual redshifts of the galaxies due to the expansion of the Universe according to Hubble's law.
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