About 40 miles east of Flagstaff, Arizona, USA, there is a huge crater 1264 meters wide and 174 meters deep with straight and steep inner walls. This is a crater formed by a meteorite weighing about 300,000 tons into the earth 2~50,000 years ago. But people found that there were no meteorites in the crater at all, and where did the meteorites in the crater go? Typically, meteorites are located nea...More