On August 10 , 1972 , a meteor which became known as the 1972 Great Daylight Fireball was witnessed by many people as it moved north over the Rocky Mountains from the U.S. Southwest to Canada . It was filmed by a tourist at the Grand Teton National Park in Wyoming with an 8-millimeter color movie camera . The object was in the range of size from a car to a house and could have ended its life in a Hiroshima-sized blast , but there was never any explosion . Analysis of the trajectory indicated that it never came much lower than off the ground , and the conclusion was that it had grazed Earth 's atmosphere for about 100 seconds , then skipped back out of the atmosphere to return to its orbit around the Sun
1972 Great Daylight Fireball
1972 Great Daylight Fireball
Impact event