Water may have killed Mars’ magnetic field
Extra hydrogen near the Red Planet’s core could have shut down convection
![Mars](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/03/032318_LG_mars-dynamo_feat.jpg?fit=860%2C460&ssl=1)
DEAD INSIDE Mars doesn’t have a magnetic field today because something shut off its churning core. A new study suggests waterlocked minerals in the mantle could have provided enough hydrogen to interfere with the convection of the core.
Viking 1/NASA