The evidence at present available points strongly to the conclusion that the spirals are individual galaxies, or island universes, comparable with our own galaxy in dimension and in number of component units. [Stating his conviction on the nature of nebulae… — Heber Doust Curtis Copy Share Image
The evidence at present available points strongly to the conclusion that the spirals are individual galaxies, or island universes, comparable with our own galaxy… — Heber Doust Curtis Copy Share Image
It is certainly a wonderful, a brain-staggering conception... that our own stellar universe may be but one of hundreds of thousands of similar universes...… — Heber Doust Curtis Copy Share Image
