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The cosmological redshift is a direct measure of the expansion of the universe thus independent of direction?
Wiki User
∙ 12y ago
Actually, no on both counts.
The redshift is a DIRECT measure of the fact that distant objects are moving away from us. It IMPLIES the expansion of the universe, but doesn't directly measure it.
Also, even if it were, it wouldn't necessarily be independent of direction. One recent study indicates that it might not be, which (if true) means the Universe is not expanding isotropically.
Wiki User
∙ 12y ago
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What causes a cosmological redshift?
A redshift occurs when the wavelengths increase in objects by light or electromagnetic radiation levels in an object. In cosmological redshift also has to do with light; however, instead of an increase in wavelengths, there is an expansion of the universe.
Would the big bang theory help explain the shift?
I presume the question refers to the "redshift" of distant galaxies. Actually it is the other way around - i.e. the Doppler redshift helps to support and explain the Big Bang Theory. This "redshift" is called the "cosmological redshift". Strictly speaking, it's not the Doppler effect.
If a star moves away from earth when all lines shift to where the waves are longer is what?
That is called "redshift".That is called "redshift".That is called "redshift".That is called "redshift".
The redshift of galaxies in the universe is correctly interpreted as?
The redshift of galaxies is caused by 3 effects: Doppler effect, Expansion of space and gravitational effects. The further away a galaxy is from us the more it is redshifted (from this it can also be deduced that the further a galaxy is from us the faster it is traveling away from us assuming all galaxies started at the same point - aka 'The Big Bang').In short the interpretation of redshift is both speed and distance from us to the galaxy in question.
What is the redshift star?
The redshift is caused by relative motion that increases the distance from the source to the observer. The faster the source of light is moving away to the observer, the greater the redshift
What causes a cosmological redshift?
A redshift occurs when the wavelengths increase in objects by light or electromagnetic radiation levels in an object. In cosmological redshift also has to do with light; however, instead of an increase in wavelengths, there is an expansion of the universe.
What shift did hubble see that supported the big bang theory?
Redshift; the generally accepted explanation for the redshift of distant galaxies is that it is cosmological redshift, caused by the expansion of the Universe. This is somewhat related to the idea of the Doppler effect.
How red shift connect with universe expanding?
The expansion of the Universe results in the light from faraway galaxies being redshifted. This is called the "cosmological redshift"; it can be compared with the Doppler effect (which also causes a redshift), but the details are somewhat difference.It is an observed fact that most galaxies are redshifted; the explanation that seems most reasonable is that it is caused by the cosmological redshift. This means that space itself is expanding.
How fast is the universe?
The Universe is not expanding. The Universe is in equilibrium. The idea that the Universe is expanding results from a mis-interpretation of Hubble's redshift measures and the Biblical Creation Story. Einstein observed that the universe was not contracting under gravity and added a cosmological constant to "account" for the lack of contraction. This cosmological constant is an anti-gravity feature that adds expansion. mathematicians claimed that Einstein's Equations only allowed for expansion or contraction. When the redshift was discovered the deal was sealed. Hubble did not interpret the redshift as an expansion, he called it "an hither to unknown principle of nature". Hubble was correct and the current view of expansion is wrong. There is a herd mentality in physics like in Stock Market Bubbles. The Big Bang is a Bubble, there is no expansion.
Would the big bang theory help explain the shift?
I presume the question refers to the "redshift" of distant galaxies. Actually it is the other way around - i.e. the Doppler redshift helps to support and explain the Big Bang Theory. This "redshift" is called the "cosmological redshift". Strictly speaking, it's not the Doppler effect.
What creates a red shift?
On short distances (ie. within a few million lightyears), the redshift we see is the direct result of the Doppler effect. The Doppler effect causes light from receding sources to be less energetic, and thus red-shifted. On distances exceeding that, redshift can be attributed to the metric expansion of the universe. In cosmological redshift, the shifting of frequencies is basically caused by the stretching of space the light is passing through, and the stretching of the light wave with it.
Does red shift expand the universe?
Redshift does not expand the universe. Redshift is a physical quantity that is used to describe the expansion of the universe. The current time has a redshift of zero. at redshift 1, the universe was half the size it is now. At redshift 2, the universe was 1/3 the size it is now, and so on. if redshift is z, then (size of universe at redshift z)/(current size of universe)= 1/(z+1)
What is the best evidence the universe is still expanding?
The redshift of distant galaxies, and the fact that the degree of redshift depends on the distance between us and those galaxies. What we observe can only be explained by Hubble Expansion.
Universe is expanding?
Yes. Anwer2: No. Redshift is misunderstood. Redshift indicates local Continuity condition, not expansion. redshift is the centrifugal force mcDel.V= -mcv/r cos(V) balancing the gravitational centripetal force, mv2/r mv2/r = mvc/r cos(V) v/c = cos(V) is the redshift.
How do we know that the Universe is expanding?
The main evidence is the redshift of distant galaxies; the only sensible explanation is a cosmological redshift, related to an expanding Universe. Other pieces of evidence are the microwave background radiation, which agrees very well with the predictions made by the Big Bang theory, and Olber's paradox - among others.
What does Cosmological red shift mean?
Cosmological redshift is the shift in stellar spectrum due the space within our Universe expanding since the time of the Big Bang. It is isotropic, which could only happen if the Universe were expanding -- if it was spinning apart, the red shift would be different in different directions. The age of our Universe, as measured by (1) the inverse of the Hubble Constant, (2) the ratio of long-lived isotopes, and (3) the age of the oldest known stars; is all consistent with each other. In addition, "old" galaxies are seen close to us but not far from us -- consistent with a Universe that has a definite beginning. This interpretation is incorrect in that the universe is not expanding. Hubble data is used as the basis for this interpretation, even though Hubble did not concur or support expansion as the cause of the redshift. The so-called cosmological redshift is a measure of the centrifugal attraction on the body. The redshift is basically the ratio of v/c where v is the gravitational velocity of the body and c is the speed of light and v/c=cos(beta) where beta is the angle of the velocity of the body compared to the gravitational radial direction. This is an unknown principle of nature in that Newton and Einstein did not consider the vector energy in their theories. Energy is a quaternion quantity. Newton and Einstein only considered the scalar energy Es= -GmM/r and did not consider the vector energy mcV, for a total quaternion energy E= -GmM/r + mcV. This vector energy is the source of the centrifugal force and makes irrelevant Einstein's "Cosmological Constant" and today's so-called "Dark Energy". Physics still has not recognized this and clings to the expanding Universe. The Universe is not expanding and the Cosmological redshift is the measure of equilibrium between the centripetal (center seeking) gravitational force and the centrifugal (center fleeing) vector force.
If a star moves away from earth when all lines shift to where the waves are longer is what?
That is called "redshift".That is called "redshift".That is called "redshift".That is called "redshift".
