Happy asteroid day! You can celebrate with this free webcast

Happy asteroid day!  You can celebrate with this free webcast

Today is asteroid day.

Not to worry: there is no risk asteroids He is expected to go our way. Instead, the United Nations celebrates Asteroid Day every June 30, the famous anniversary 1908 Tunguska happenedwhere an incoming space rock flattened about 800 square miles (2,070 square kilometers) of the Siberian forest.

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