We still have a relatively strong magnetosphere, that's not going to happen yet.
Something catastrophic happens to this planet every 12,000 years or so. The science is pointing to a micro nova event in the next 40 years.
Yes, and that can only happen when the magnetosphere is weakened enough, which cannot happen until the sun goes into a grand minimum.
I completely agree, and it is coming.
Yes, that is the concern. There is science which suggests that it's the sun which generates the Earth's magnetosphere by induction.
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