Labels:text | screenshot OCR: THE TUNGUSKA EXPLOSION ON THE MORNING OF June 30, 1908, and exploded in a fireball that was there was a violent explosion in the brighter than the Sun. The explosion Tunguska region of Siberia in Russia. devastated an area about 80 km Eyewitnesses up to 500 km (300 miles) (50 miles) across. It is thought that away reported that an intensely bright, the incoming object may have been pale blue object flew through the sky a small comet nucleus or asteroid. Arctic Circle .Arctic Ocean Moscow Siberia Tunguska RUSSIAN FEDERATION, FLATTENED FOREST The blazing celestial object left a trail of destruction in its wake, crushing trees like matchsticks.