![Why Earth's Magnetic Shield Matters](https://hight3ch.com/wp-content/uploads/2015/05/518412343_c_o.jpg)
The sun has two planets in its Goldilocks zone: the Earth and Mars. The crucial difference: a magnetic field that protects us from the sun’s radiation and makes liquid water – and life – possible on Earth
The sun has two planets in its Goldilocks zone: the Earth and Mars. The crucial difference: a magnetic field that protects us from the sun’s radiation and makes liquid water – and life – possible on Earth