Does Redshift Indicate Mutual Movement Between Distant Galaxies?

[aerogurl2]

I don't understand whether this is true or false. It goes like this:
if a distant galaxy has a substantial redshift ( as viewed from our galaxy) then anyone living in that galaxy would see a substantial redshift in a spectrum of the Milky Way galaxy.

I know redshift is when the object is moving away from our galaxy, then wouldn't we see that galaxy moving away as well? am i offtrack??

 

[Mindscrape]

Yes, we would see the galaxy moving away from us too, but what does that have to do with the question? The question is hinting at frames of reference.

Do you know about special relativity and the doppler effect?

 

[m2003]

The statement is true. Redshift is caused by the Doppler effect, which is the change in frequency or wavelength of a wave (such as light) as the source and observer move relative to each other. In the case of galaxies, the redshift is caused by the expansion of the universe, which causes the galaxies to move away from each other. This means that if a distant galaxy has a substantial redshift when viewed from our galaxy, then anyone living in that galaxy would also see a substantial redshift in the spectrum of our Milky Way galaxy.

You are correct in understanding that redshift is caused by objects moving away from us. This means that the further away a galaxy is from us, the faster it appears to be moving away and the greater its redshift will be. This is a fundamental concept in cosmology and is used to measure the distances and velocities of galaxies.

In summary, the statement is true and understanding redshift is crucial in understanding the expansion of the universe and the movement of galaxies.