Who first argued that galaxies were 'island universes' in the Great Debate of 1920? A. Heber Curtis B. Edwin Hubble C. Harlow Shapley I can find reference to both Curtis and Shapley. Thanks for any...
Help needed please on a couple of Dingbats ..... Pot00000000000 (something perhaps to do with pot noodle?) ACRIML T M H U A S W T m ce m ce m ce o v e r s Many thanks...