Tag: tunguska event

  • Asteroids: A Threat from Space

    Today is Asteroid Day, marking the anniversary of the 1908 Tunguska Event, the largest asteroid impact on earth in recent history. Here are some things you may not have known about both of them. On the morning of June 30, 1908, an explosion over eastern Siberia flattened 770 square miles of forest. It’s believed that…