![Mars Dried Out Because Its Magnetic Field Is So Weak](https://hight3ch.com/wp-content/uploads/2015/11/mars-dried-out-because-its-magne.jpg)
Mars once had oceans, but its magnetic field just wasn’t strong enough to keep the atmosphere – and most of the water – from blowing away.
Mars once had oceans, but its magnetic field just wasn’t strong enough to keep the atmosphere – and most of the water – from blowing away.