Earths magnetic field can only change due to the effect of another magnet in the form of planet or any heavy object passing by  . Gravitation is nothing but the magnetism  . Earth revolution around sun is due to magnetism. The life on the earth is due to this magnetism. Earth i

Earth's magnetic field can only change due to the effect of another magnet in the form of a planet or any heavy object passing by. Gravitation is nothing but the magnetism. Earth's revolution around the sun is due to magnetism. The life on the earth is due to this magnetism. Earth i