image #1 Chichen Itza Great Pyramid
image #2 Mayan Astronomical Observatory at Chichen Itza
What celestial event caused the Mayans to construct a calendar that ended on that date? Do we need to worry? Click here for the Broadcast
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image #3 NASA / Caltech reconstucted image of our Milky Way galaxy as would be seen from far away.
image #4 Intersection of the central planes of the Milky Way and our Solar System's Ecliptic.
image #5 Relative acceleration of gravity at Earth's surface from various celestial bodies.
