New mission to study the earth's magnetic field.
New mission to study the earth's magnetic field.

Souce
There are two planets in the solar system similar to the Earth, which are Mars and Venus, in the case of Mars, the magnetic field does not exist, there are traces, there are fossil remains of a magnetic field, the theory is that although Mars still has a hot core, it is already too small and has cooled down too much to act as a dynamo and create the field, a protective magnetic field, but it did have it in the past, as intense as the Earth could have had it or as the Earth has today.
The Tracers mission stands for tandem electrodynamic cusp reconnaissance and reconnection satellites. The ships are going to fly in low Earth orbit through the polar cusps, which are funnel-shaped holes, and this magnetic reconnection thing, although it sounds strange, is one of the relatively new phenomena that we have discovered and that can cause serious problems for our space climate and our satellite technology.

Souce
This is the definition given by NASA in the statement, I have always interpreted it as the magnetic lines ending up twisting when they collide with the solar wind, which is basically what we are seeing in the graphs they have published. Do you see this hole here at the north pole? But at the south pole there would be another one exactly like it.
The images without reference were created with AI
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