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1972 Great Daylight Fireball above the United States and Canada: First scientifically observed [23] 71.4: 100: March 29, 2006: 2006 Earth-grazing Fireball above Japan [24] 98.7: 44: October 13, 1990: 1990 Earth-grazing Fireball above Czechoslovakia and Poland: First captured from 2 distant locations, which enabled computing its orbit by ...
The Bordkanone 3,7 (BK 3,7) ("on-board cannon 3.7") was a German 3.7 cm (1.46 in) anti-tank/bomber autocannon of World War II and based on the earlier 3.7 cm (1.46 in) 3.7 cm Flak 18 made by Rheinmetall.
Beijing has hosted major international sporting events, including the 2008 Summer Olympics, the 2015 World Athletics Championships, and the 2022 Winter Olympics, and is the only city to have hosted both the Winter and Summer Olympics. [78]