Earth’s magnetic field originates deep inside the planet and stretches far into space, where it forms an invisible shield called the magnetosphere (shown at right). This shield protects us from the full force of cosmic radiation and from dangers emanating from the sun.
وكيف ذلك ؟‏ تلبس الارض درعين مذهلين يمدّانها بالحماية :‏ حقلا مغنطيسيا قويا وغلافا جويا يلائم حاجاتها تماما .‏