The Sky at Night — Episode 5: Quasars, Redshifts and Controversy

You are watching the episode Quasars, Redshifts and Controversy Are quasars remote and super-luminous, or are they comparatively close to our galaxy? Dr Halton C. Arp , formerly of Mount Wilson Observatory, believes that they are not so remote as most people think, and he discusses these exciting and controversial ideas with Patrick Moore.