And while the Mayans were great naked-eye astronomers, there is no evidence that they knew anything about sunspots or the solar magnetic field, and there is no evidence that they believed the turn-over in their calendar would lead to anything bad (it is not an end, anymore than 1999/2000 was the "end" of our calender).

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At night the stars put on a show for free (Carole King)

One Earth, One Sky - IYA 2009
All moderation in purple