1926 Death Johan LE Dreyer, Danish astronomer (Catalog of Nebulae), dies at 74 1920 Event H Shapley and H D Curtis hold "great debate" on nature of nebulae 1871 Death John F. W. Herschel, British astronomer (Catalogue of Nebulae), dies 1864 Event William Huggins discovers chemical composition of nebulae 1852 Birthday Johan L. E. Dreyer, Danish astronomer, New general catalogue of nebulae 1824 Birthday William Higgins, discoverer, nature of spiral nebulae
