The inner core of Earth may have changed shape in the past 20 years, according to a group of scientists. The inner core is ...

similar to Earth's magnetic field. But as we shift toward solar maximum, "the sun's magnetic field becomes more complex, without a clear north-south pole separation," French said. By the time ...

The magnetic north pole, where compass needles point, is about 1,200 miles south and is where geomagnetic field lines are vertical. Earth’s magnetic north is not static. Like an anchorless buoy ...