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Recessional red shift refers to the phenomenon where light emitted by distant galaxies appears to be shifted towards longer (redder) wavelengths as they move away from us due to the expansion of the universe. This effect is a key piece of evidence supporting the concept of an expanding universe and the Big Bang theory.

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What is red-shift and what does the size of the redshift tell us about the distant galaxies?

Red shift is the apparent elongation of the wavelength of light reaching us from distant sources of light due to the expansion of space in between. The amount of red shift can be used to work out the recessional velocity of a galaxy and it's distance from us.


Can a red shift and a blue shift exist on the same object at the same time?

No, red shift and blue shift are opposite phenomena caused by the Doppler effect. Red shift occurs when an object is moving away from the observer, while blue shift occurs when an object is moving towards the observer. It is not possible for an object to exhibit both red shift and blue shift simultaneously.


What is the red shift of hydrogen?

The red shift depends on the relative motion of the emitting source and receiving detector. Hydrogen per se has no red shift. There is hydrogen with great red shift (in stars in galaxies far away that are moving rapidly away from us).


What is the importance of the light red shift in determining the age and motion of stars?

Red shift is of virtually no importance in determining the age of stars within our galaxy or local group. But the red shift is crucial for measuring relative velocities of those stars with respect to us. Stars approaching us are blue shifted, such as the stars in the Andromeda Galaxy. We can also determine which direction the galaxy is spinning, as the light of stars one one side will be shifted less than the light of the stars in front, or on the other side. Starlight from galaxies well beyond our local group are uniformly shifted towards the infrared end of the visible spectrum, varying with the distance of those galaxies from us. The further away they are, the deeper red the light is from them, indicating the greater their recessional velocity. I cannot think how stellar age might correlate with red shift.


What does red shift show?

The red shift shows the velocity with which an object is moving away from the earth. The red shift of an object is correlated to its distance from the earth and so it is also a measure of the distance.

Related Questions

What is red-shift and what does the size of the redshift tell us about the distant galaxies?

Red shift is the apparent elongation of the wavelength of light reaching us from distant sources of light due to the expansion of space in between. The amount of red shift can be used to work out the recessional velocity of a galaxy and it's distance from us.


When was Recessional - novel - created?

Recessional - novel - was created in 1994.


When was Recessional - poem - created?

Recessional - poem - was created in 1897.


How many pages does Recessional - novel - have?

Recessional - novel - has 484 pages.


red shift?

red shift


What recessional music played at diana's wedding?

The recessional music was Walton's Crown Imperial.


What is the ISBN of Recessional novel?

The ISBN of Recessional - novel - is 0-679-43612-X.


What is the Tagalog word for recessional?

Tagalog translation of RECESSIONAL: Ang awit o tugtog pagkatapos ng pagmimisa


When was The Red Shift created?

The Red Shift was created in 2005-06.


What is the opposite of the red shift?

The opposite of the red shift is the purple shift.


Can a red shift and a blue shift exist on the same object at the same time?

No, red shift and blue shift are opposite phenomena caused by the Doppler effect. Red shift occurs when an object is moving away from the observer, while blue shift occurs when an object is moving towards the observer. It is not possible for an object to exhibit both red shift and blue shift simultaneously.


What is the shift in the light of a galaxy toward the red wavelength called?

This phenomenon is called red shift.