January+EMP

Science Discovery for 1/18/15: What makes the earth magnetic?
===The molten iron that partially makes up the Earths core continually flows around. While its occurring, it generates powerful currents that create the Earths magnetic field. This is similar to the way magnetic currents are generated by an electric motor. Therefore the Earth is rather like an enormous magnet. Otherwise known as the magnetosphere, the Earths magnetic field stretches out into space, helping the Earth from the suns radiation. The Earths magnetic field reaches out to some 60,000km. The magnetic poles are close to the geographic North and south Poles.=== Science **Discovery January: Is time travel possible?**