I would really like to know how the Astronomers use "Red Shift", in the light spectrum,
to determine the distance to a very distant objects (see title).
The way I understand what the astronomers are doing is:
1. gather the light from a very distant object.
2. Pass the gathered light through a prism
3. Measure how far the red light has shifted. The more it shifts the farther away it is.
If this is where they stop their calculation of distance, to the very…Continue