
Great Daylight Fireball: A 1972 Earth-grazer brightened North America
On Aug. 10, 1972, an Earth-grazing fireball streaked across North America from Utah to Alberta, likely 10–45 feet in diameter and bright enough to light up the daytime sky, but it did not hit the ground. Daytime fireballs are rarer and far more visible than typical night meteors, and a similar event today would probably be witnessed by millions with social media buzzing about the sightings.


