Earth’s magnetic field has a 4,300,000 square mile hole – and it’s growing

The hole could lead to satellites being fried by searing cosmic rays (Picture: Getty Images/Science Photo Libra)An already gigantic hole in Earth’s natural force field has grown by nearly half the size of Europe in 10 years, according to a new study.The Earth is protected by the cosmic equivalent of cling film called the magnetic field, generated by swirling iron currents in the liquid outer core.The magnetosphere protects us against dangerous galactic and solar rays, yet it has been weak