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The news media has publicized that 2012 is the end of the Mayan calendar, and that all the planets will be aligned. Is there any truth to this?

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  • $\begingroup$ By reflex I thought this should be closed, but the tints of voodoo don't taint the underlying, very answerable question regarding planetary alignment; with consideration, I also think it is a valuable example that the community can approach and address these questions (where they are fundamentally legitimate and not venturing into the pseudo-scientific) pragmatically and tolerantly. Not least, should I need to mention, is the responsibility to provide the science! $\endgroup$ Nov 8, 2011 at 22:37
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    $\begingroup$ Since this subject has been extremely mixed up with a lot of misinformation and fearmongerin which doesn't seem to be going out before we arrive at 2013, you may find it worthwhile to consult this site: 2012hoax.org You would do well to approach claims from mainstream media with a (very large) grain of salt. $\endgroup$
    – jbatista
    Nov 8, 2011 at 23:14
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    $\begingroup$ There is a reason why the Maya aren't around anymore... $\endgroup$ Jun 5, 2012 at 3:20
  • $\begingroup$ @BenjaminHorowitz :Some of them are still around in Yucatan, but they never predicted the end of the world. I heard on the (French) radio a mayanist explaining that the very concept of "end of the world" is antinomic with Mayan religion, which is based on a cyclic idea of the time. $\endgroup$ Jun 5, 2012 at 9:45

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The answer is absolutely not. There is nothing interesting/important/rare/weird/abnormal/whatever astronomically happening in December 2012. I have written at length on this topic and a year ago summarized my posts on the subject. In those, I've covered the vast majority of 2012 doomsday or whatever claims. Besides that, though, 2012 is likely not the start of the next baktun in the Mayan long count calendar.

With that stated, one astronomical event that is rare that is occurring in June of 2012 is a Venus transit of the sun. This happens in pairs of 8 years separation with gaps of 121.5 and 105.5 years between those pairs. The last transit was in 2004, the next in 2012, the one after that in 2117.

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  • $\begingroup$ And I just posted a small correction (not relevant to the current point) on your blog post. $\endgroup$ Nov 3, 2011 at 4:17
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    $\begingroup$ Not that a transit of Venus means anything at all in the apocalyptic sense. The last pair of transits (or was it the pair before that?) enabled some interesting science to be done for the first time, but there's not much that another transit can reveal to modern astronomy. $\endgroup$
    – Andrew
    Nov 3, 2011 at 12:47
  • $\begingroup$ Thank you for the clarification. Did I get a -1 because I didn't read your blog post before asking the question? $\endgroup$
    – Michael Blaustein
    Nov 3, 2011 at 14:31
  • $\begingroup$ I didn't down-vote your question. $\endgroup$ Nov 3, 2011 at 16:21
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    $\begingroup$ Can't edit my comment, so I'll just add -- people on this site will usually vote down a question/statement on pseudoscience topics, so that was probably why it was downvoted. I've actually only downvoted one person's post before, I think because it was completely illegible. $\endgroup$ Nov 3, 2011 at 21:22
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I have thought for many years that the current transit of Venus, mentioned above, is the reason why the Mayan calendar "ends" this year. On the multi-decade or multi-century scale, this time is singled out by the equinoctial precession having placed the solstice sun in proximity to the center of the Milky Way bulge, and the precise year is singled out by the second transit of Venus. This refines John Major Jenkins' idea that this is the year in which the solstice sun comes closest to the "galactic center", as seen from earth. That's not true and the exact center doesn't stand out to the naked eye anyway, but the general precessional trend and the timing of the transits were both accessible to Mayan observers.

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    $\begingroup$ There is no historical evidence to suggest the Mayans knew anything about the transit of Venus (it is a very rare event that is difficult to see by the naked eye). Also the skills required to calculate the intervals of Venus's transit were, in all likelihood, well beyond the ability of Mayan astrometers. $\endgroup$ Jun 5, 2012 at 3:23
  • $\begingroup$ Calculations were widespread (see: Xultun) and the best records were destroyed (see: Diego de Landa). All they had to do was figure out the motions of Sun and Venus on the celestial sphere, extrapolate, and take note of when the paths coincide. $\endgroup$ Jun 5, 2012 at 4:46

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