PBS Space Time

How Magnetism Shapes The Universe

Compass needles align with magnetic field lines. And, on the precise spot of magnetic north, those field lines are vertical. So, we can go down to the molten Iron dynamo earth surrounding the earth's core and up...today we explore how far up and out we are able to go.

How Magnetism Shapes The Universe

13m 26s

Compass needles align with magnetic field lines. And, on the precise spot of magnetic north, those field lines are vertical. So, we can go down to the molten Iron dynamo earth surrounding the earth's core and up...today we explore how far up and out we are able to go.

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