Great Canadian Flag Debate the new flag adopted in 1980 are meant as a tribute to the Union Flag. British Columbia's flag, which features the Union Flag in its top portion, was introduced in 1960 and is actually based on the shield of the provincial coat of arms, which dates back to 1906. Hence, both Newfoundland's use of the Union Flag and the adoption of BC's flag are unrelated to (and, in fact, pre-date) the great flag debate. Since 1996, February 15 has been commemorated as National Flag of Canada Day in Canada. Great Canadian Flag Debate The Great Canadian Flag Debate (or Great
Great Debate (astronomy) format of the great debate has been used subsequently to argue the nature of fundamental questions in astronomy. In honor of the first "Great Debate", the Smithsonian has hosted four more events. 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