hat speed should a galaxy move with respect to us so that the sodium line at 589.0 nm is observed at 589.6 nm?

With what speed should a galaxy move with respect to us to that the sodium line at 589.0 nm is observed at 589.6 nm ?

With what speed should a galaxy move with respect to us to that the sodium line at 589.0 nm is observed at 589.6 nm ?

What speed should a galaxy move with respect to use so that the sodium line at 589.0 nm is oberved at 589.6 nm ?

What speed should be galaxy move with respect to us to the sodium line at 589.0 nm is observed at 589.6nm?

With what speed should a galaxy move with respect to the earth so that sodium line at 589 nm is observed at 589.6nm?

With what speed should a glaxy move with respect to us so that a certain line at 674 nm is observed at 674.4 nm ?

With what speed should a glaxy move with respect to us so that a certain line at 674 nm is observed at 674.4 nm ?