Giving Venus an artificial magnetic field

As discussed in a previous post, in the far future humanity may decide to terraform Venus so that the planet has a similar temperature and atmosphere to that which currently exists on the Earth. However, the lack of a global magnetic field would cause significant obstacles to humans settling on Venus. Without this protective shield inhabitants would be exposed to the… Continue reading Giving Venus an artificial magnetic field

The Earth’s magnetic field

The Earth is unique among the inner planets in our Solar System (Mercury, Venus, Earth and Mars) in that it has a strong magnetic field. It is this invisible field which causes the needle of a compass to point North that has been used by navigators for centuries and is used by migrating birds and some land… Continue reading The Earth’s magnetic field