Astronomy debate held on 26 April 1920 at the Smithsonian Museum of Natural History between Harlow Shapley and Heber Curtis about whether spiral nebulae were different galaxies or part of the Milky Way. It took place on 26 April 1920. The setting was National Museum of Natural History. Those involved included Harlow Shapley and Heber Doust Curtis. Its main subject is astronomy and spiral galaxy.
Before and after
- from 4 April 1920 to 7 April 19201919-1920 Arab riots in Palestine
- 7 April 1920Birth of Ravi Shankar
- 15 April 1920Birth of Richard von Weizsäcker
- from 19 April 1920 to 26 April 1920San Remo conference
- 26 April 1920Great Debate
- from 28 April 1920 to 18 October 1991Azerbaijan Soviet Socialist Republic
- 18 May 1920Birth of John Paul II
- 4 June 1920Treaty of Trianon
- 14 June 1920Death of Max Weber
More in Wars, politics & history
- 4 June 1917Pulitzer Prize
- 1919Paris Peace Conference
- 3 March 1923Time
- 30 September 1938Munich agreement
- from 1 September 1939 to 6 October 19391939 Invasion of Poland
- 1944Golden Globes
The era
This moment belongs to the Modern era (1914 CE to 1945 CE), world wars and a changing world. You can also browse everything in the 20th century.