
This is a map showing the structure and contour of the Bow City crater, possibly created by a giant meteorite impact. Color variation shows meters above sea level.
A geologist discovered the structure near the village of Bow City, although time and glaciers have mostly eroded the signs of the ancient meteorite strike. Scientists can't say for sure that a meteorite impact created the Bow City crater, but seismic and geological evidence strongly support this notion.
"An impact of this magnitude would kill everything for quite a distance," Doug Schmitt, a rock physics expert at the University of Alberta, Canada, said in a statement. If the strike happened today, the city of Calgary, which is 125 miles (200 km) to the northwest, would be "completely fried," and in Edmonton, which is 300 miles (500 km) northwest, "every window would have been blown out," he added.
Comment: The skies are likely to get even busier in the very near future, if the chart and trend indicated below is anything to go by. It shows the increase of fireball reports over the last 2 and a half years - particularly since April of last year!