Asteroid Day 2017

Our Signatories - Over 200 astronauts, scientists, Nobel Laureates, business leaders and artists signed the 100X Asteroid Declaration. View them here. Ask the Experts - Find frequently asked Questions, answered by our Experts. Still have Questions then submit your own Questions. INTERACTIVE CHELYABINSK QUIZ. On 15 February 2013, a fireball blazed across the sky over the Ural Mountains in Russia. The asteroid broke up over the Chelyabinsk region, injuring inhabitants below and leaving destruction in its wake.