On the morning of February 15, 2013, a 7,000-ton asteroid crashed into the Earth's atmosphere, exploded and fell to earth across a wide swath near the Ural Mountains. The Siberian meteor was captured by digital dashboard cameras, a common fixture in Russian cars and trucks. Within days, armed with this crowd-sourced material, NOVA crews, along with impact scientists, hit the ground in Russia to hunt for debris from the explosion and clues to the meteor's origin and makeup. Is our solar system a deadly celestial shooting gallery - with Earth in the cross-hairs? What are the chances that another, even more massive, asteroid is heading straight for us? Are we just years, months or days away from a total global reboot of civilization, or worse?

NOVA Season 40 Episodes...

• s40e01 - Secrets of the Viking Sword
• s40e02 - Forensics on Trial
• s40e03 - Mystery of Easter Island
• s40e04 - Ultimate Mars Challenge
• s40e05 - Inside the Megastorm
• s40e06 - Doomsday Volcanoes
• s40e07 - Decoding Neanderthals
• s40e08 - Rise of the Drones
• s40e09 - Who Killed Lindbergh's Baby?
• s40e10 - Building Pharaoh's Chariot
• s40e11 - Earth From Space
• s40e12 - Mind of a Rampage Killer
• s40e13 - Meteor Strike
• s40e14 - Ancient Computer
• s40e15 - Australia's First 4 Billion Years - Awakening
• s40e16 - Australia's First 4 Billion Years - Life Explodes
• s40e17 - Australia's First 4 Billion Years - Monsters
• s40e18 - Australia's First 4 Billion Years - Strange Creatures
• s40e19 - Manhunt - Boston Bombers
• s40e20 - Oklahoma's Deadliest Tornadoes

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.