1920

1. 1920-04-26 astronomy theory

   Shapley–Curtis debate held

   Category: Culture, Education, and Public Engagement › Type: Cultural event

   Harlow Shapley and Heber Curtis debated the scale of the universe and the nature of spiral nebulae.

2. 1920-08-22

   Ray Bradbury: birth

   Category: Organizations and People › Type: Birth

   • Science fiction
   • Science fiction literature

   Role: Science fiction writer

   Ray Bradbury: birth.

3. 1920-10-08

   Frank Herbert: birth

   Category: Organizations and People › Type: Birth

   • Science fiction
   • Science fiction literature

   Role: Science fiction writer

   Frank Herbert: birth.