The Tunguska explosion occurred on June 30, 1908 over Siberia. It was a cosmic body explosion that was accompanied by an ...

Astronomers have gotten a glimpse of the "city-killer" asteroid before it disappears until 2028, according to NASA.

and the Tunguska event, a meteor airburst that flattened a Siberian forest, is thought to have released about 15 megatons ...

While it is not forecast to strike Earth in 2032, the asteroid now has a 1.7% probability of ... In 1908, the similarly sized Tunguska asteroid flattened trees over an area of about 1,250 miles ...