To LX200,
Well the Earth axis tilt has a cycle too long for our lifetimes (that is a predictable) but on the other hand a flip in the magnetic poles is imminent (that is an unpredictable) which means soon, maybe a lifetime or maybe more.
The latter is based on geological rock analysis as to magnetic alignment of certain rock minerals which shows periodic flipping but not on a predictable schedule such as axis tilt.
Signs of a flip is whale beaching which is now blamed on disorientation due to a change in the magnetic grid flux pattern. Other signs come from certain birds migrating to places they never did in the past.
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