Big History

Defeating Gravity

  • Season 1
  • , Episode 6  | 
  • Aired: 11/16/2013
    • Length: 21:30
    • Plays: ???
Synopsis >

Flight takes more than wings. We need the right kind of air, the perfect materials cooked up over billions of years, and cosmic forces that are just right for us to leave the ground without tumbling off into space. Big History reveals how planet Earth is the perfect planet for flight.

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