In the Earth (see image ... to freeze at high temperatures.) This heat drives convection cells within the liquid core, which keeps the liquid metal moving through the magnetic field.

The imager takes photos in visible light, maps the magnetic field and records its speed. The image below shows the ... the agency plans to release more high-resolution maps of the Sun twice ...

But why does magnetic north move, and what does this mean for our understanding of Earth’s magnetic field? Unlike the ... the ...