Red shift is observed in the spectrum of light from an object when it is moving away from the observer. Most astronomical objects display a red shift in their light. Also, the red shift is greater for objects which are further away. For this to happen - in all directions, the universe must be expanding.
Because the universe as a whole is expanding, distant galaxies are moving away from us. As a result, electromagnetic waves emitted by those galaxies experience what is known as a red shift. Their wavelengths get longer.
From our perspective the most distant galaxies we can see in any direction are roughly 20 billion light years away. The precise topology of the universe is not really that of an expanding sphere. There may well be nothing--not even nothing--beyond the "edge" of the universe.
that the universe was in 1904 expanding. this was due to the lack of blue shift, therefor it can be deduced that the red shift in orrcuring within the galaxy.
The main piece of evidence is the redshift of galaxies. In spectroscopy an absorption line that is redshifted indicates that the object is moving away. The farther the object is from the source of observance the faster that object travels in relation to the observer. Almost all galaxies are redshifted as opposed the our local neighborhood, the Andromeda Galaxy for instance is blueshifted because it is heading strait for us. at some point all galaxies will spread so far from each other that they will be going so fast that they reach the speed of light in respect to our position and are never seen again. Another piece of evidence is the fact that their is some warmth in space. Also known as the Cosmic background radiation. Empty Space is around 2.7 degrees kelvin which is the residual heat from the big bang. Had their not have been an explosion with a massive amount of heat and energy and everything simply was, then empty space would be absolute zero. This is the two strongest arguments that support the big bang theory.
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.
because the universe is expanding.
This can be seen from the redshift of distant galaxies - normally attributed to the Doppler effect.
This should be because of the fact that the Universe is expanding. You see a blueshift when objects move closer to you. Other than super distant galaxies, most galaxies will not measure to be a blueshift due to the fact that the Universe is expanding and accelerating.
This should be because of the fact that the Universe is expanding. You see a blueshift when objects move closer to you. Other than super distant galaxies, most galaxies will not measure to be a blueshift due to the fact that the Universe is expanding and accelerating.
Yes; it is expanding right now, as can be seen in the redshift of distant galaxies.
A misunderstanding of red shift is the indicator is expanding. The correct understanding of red shift indicates the universe is in continuity, not expanding and is finite. RED SHIFT OF DISTANT GALAXIES.
Astronomers conclude that the universe is expanding, because wavelengths are increasing.
The red shifts show the galaxies are under centripetal force and the red shift indicates the centrifugal force. This indicates that the universe is in continuity, the centripetal and centrifugal forces are in balance.
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.
Because the universe as a whole is expanding, distant galaxies are moving away from us. As a result, electromagnetic waves emitted by those galaxies experience what is known as a red shift. Their wavelengths get longer.
The redshift of distant galaxies is believed to be a result of the Doppler effect - in other words, the light is shifted towards lower frequencies ("redshifted") due to the fact that the galaxies move away from us.
The first concept is that of the redshift, which is the observation that light from distant galaxies appears to be shifted towards longer wavelengths. This indicates that these galaxies are moving away from us. The second concept is the cosmic microwave background radiation, which is a faint radiation that is present throughout the universe and is thought to be leftover electromagnetic radiation from the early stages of the universe. Together, these concepts support the idea that the universe is expanding.