Another large asteroid impact, about 35 million years ago, made a huge crater in the area that is now the Chesapeake Bay, near Washington, D.C. More recently, in 1908, an asteroid likely exploded over ...

made a huge crater in the area that is now the Chesapeake Bay, near Washington, D.C. More recently, in 1908, an asteroid likely exploded over Tunguska, Russia, flattening 830 square miles (2,150 ...