http://www.voanews5aitmne6gs2btokcacixclgfl43cv27sirgbauyyjylwpdtqd.onion/a/study-details-differences-between-deep-interiors-of-mars-and-earth/7065541.html
The nature of the core can play a role in governing whether a rocky planet or moon could harbor life. The core, for instance, is instrumental in generating Earth's magnetic field that shields the planet from harmful solar and cosmic particle radiation.