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Monday, 24 December 2012

A video clip that caught my attention




Why Mars Died, and Earth Lived



A video that explains why the water in Mars disappeared and the water in Earth didn't.

I learnt...
  • That not only Mars is affected.                                                Venus and Earth are also affected.
  • What had caused the disappearance of the water in Mars.                      The Sun's high energy photons and solar winds caused the disappearance of the water in Mars.
  • Why the water in Earth didn't disappear.                                                A powerful magnetic field, generated in the core, that deflected many of the high energy particles released by the sun and much of the solar energy released that get through the magnetic field is reflected back into space by clouds, ice and snow, which together, prevented the disappearance of the water in Earth.

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