Secrets of the Earth

Secrets of the Earth

Magnetic Shield (1x7)


Udgivelsesdato: Jun 27, 2013

An examination of Earth's metallic core and how it contributes to a magnetic shield that protects the planet from harmful space radiation.

  • Premieret: Maj 2013
  • Afsnit: 17
  • Følgere: 5
  • Slut
  • The Weather Channel
  • Ukendt