Great Canadian Flag Debate red flag for the nation's centennial celebrations. It was designed to appeal to those who were used to the Red Ensign and had not yet become accustomed to the Maple Leaf Flag. The Canadian Red Ensign itself can sometimes be seen today in Canada, often in connection to veterans' associations. In addition, the provinces of Manitoba and Ontario adopted their own versions of the Red Ensign as their respective provincial flags in the wake of the national flag debate. On the other hand, Newfoundland used the Union Flag as its provincial flag from 1952 until 1980; the blue triangles on
Great Debate (astronomy) Great Debate (astronomy) The Great Debate, also called the Shapley–Curtis Debate, was held on 26 April 1920 at the Smithsonian Museum of Natural History, between the astronomers Harlow Shapley and Heber Curtis. It concerned the nature of so-called spiral nebulae and the size of the universe; Shapley believed that distant nebulae were relatively small and lay within the outskirts of Earth's home galaxy, while Curtis held that they were in fact independent galaxies, implying that they were exceedingly large and distant. The two scientists first presented independent technical papers about "The Scale of the Universe" during the day and then