Hanoi, Oct. 5 -- All 10 members of Vietnam's two teams won medals at the 19th International Olympiad on Astronomy and Astrophysics (IOAA 2026), securing six golds and four silvers. The gold medalists were Nguyen Tuan Kiet from Nguyen Hue High School for Gifted Students; Le Gia Hong Minh from Hanoi-Amsterdam High School for the Gifted; Le Ba Tuan Viet from the High School for Gifted Students under the University of Natural Sciences, Vietnam National University, Hanoi; Le Quang Tri from the High School for the Gifted under Vietnam National University-Ho Chi Minh City; and Nguyen Quang Dung and Mai Van Khanh from Lam Son High School for the Gifted in Thanh Hoa province. Three silver medalists - Bui Nguyen Hong Quan, Tran Minh Thai and Nguyen...