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Watch NOVA Season 40 Episode 13 Online

  • 6.9/10
  • COUNTRIES: United States of America
  • Subtitles: English

On February 15, 2013, a 7,000-ton asteroid crashed into the Earth's atmosphere over Russia with the power of 30 Hiroshima bombs. Within days, NOVA crews joined impact scientists in Russia as they hunted for clues about the meteor's origin and makeup.