NosyNed writes:
As the recession velocity approaches c (light speed) the wave length is stretched to infinity and the galaxy is no longer visible.
I remember reading that this isn't true, but I can't remember the theoretical reasoning. But I do know that we can see galaxies outside of the Hubble sphere (which were receding superluminally when they emitted the photons that our telescopes can see).
I'll have to wait for the explanation too. Something about the Hubble sphere growing, I think...?
"Der Mensch kann was er will; er kann aber nicht wollen was er will." (Man can do what he wills but he cannot will what he wills.) - Arthur Schopenhauer