On June 30, 1908, a massive mysterious explosion of a cosmic body shook the skies of Tunguska (in Siberia), on a date that would come to be known as International Asteroid Day.
… (in Siberia), on a date that would come to be known as International Asteroid Day. But was it an asteroid? Andy Bruno … Outer Space/Universe … Environment … Science & Technology … Soviet Union … The Tunguska Mystery Explosion …