2012, NASA and the Mayan Calendar Mayan Calendar

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2012, NASA and the Mayan Calendar Mayan Calendar

2012, NASA and the Mayan Calendar
Answers to some questions about 2012 from NASA’s Ask an Astrobiologist, Dr. David Morrison, and information about ancient Mayan calendars and their base 20 numerical system.

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M	T	W	T	F	S	S
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2012, NASA and the Mayan Calendar Mayan Calendar