[CommieBobDole]

"This trajectory explains why there is no crater at Köfels. The incoming angle was very low (six degrees) and means the asteroid clipped a mountain called Gamskogel above the town of Längenfeld, 11 kilometers from Köfels, and this caused the asteroid to explode before it reached its final impact point. As it traveled down the valley it became a fireball, around five kilometers in diameter"

This doesn't even make any sense. A 1km asteroid going many kilometers a second entered at a six degree angle, tore through hundreds of miles of atmosphere without burning up or breaking up, hit a mountain causing a landslide and only then turned into a 5km fireball and traveled down the valley (at a height of ~1500 meters above the valley floor) and just sort of evaporated?

I don't think physics works the way the author of this piece thinks physics works.