big bang

Fascinating factoid of the day: the Tunguska event was a massive explosion that occurred in central Russia on June 30, 1908. It is surmised, though not proven, that the blast was caused by a huge meteoroid that slammed into the earth's atmosphere and burst, creating a release of energy 1,000 times more powerful than the bomb dropped on Hiroshima. The explosion felled an estimated 80 million trees over 2,150 square kilometers (830 sq mi). Wow.