الثلاثاء، 30 يونيو 2015

Scientists around the world wish you a Happy Asteroid Day

An artist's (very dramatic) impression of what an asteroid impact on Earth would look like
Happy Asteroid Day! It's the 107th anniversary of the Tunguska event and a timely moment to remind you there are deadly rocks in the sky that could totally ruin your 4th of July weekend.

sourse ExtremeTech http://ift.tt/1FO6zXs
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