Ancient Time: Earliest Mayan Astronomical Calendar Unearthed in Guatemala Ruins

The ninth-century wall paintings predate existing Mayan astronomical records by hundreds of years















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Humankind's Enduring Fascination with the Apocalypse The so-called Mayan apocalypse is just the latest in a long line of doomsday predictions  » December 19, 2012

The smaller numbers on the lunar table might also relate to the planets, notes Susan Milbrath, curator of Latin American art and archaeology at the Florida Museum of Natural History. That table ends with the number 4,784, which is nearly equal to the days elapsed in 12 synodic periods of Jupiter. "I think they were actually looking at the relationship of the lunar cycle to Jupiter, which is really intriguing," Milbrath says.

The researchers say that they are still peeling back the layers of meaning in the new find. "We're currently expanding the study of the possible astronomical implications of the Xultun inscriptions, and I think it is entirely possible that the Jovian period might have been involved as one of the periods of commensuration," says study co-author Anthony Aveni, a professor of astronomy, anthropology and Native American studies at Colgate. "There isn't much more we can say at this time, as there are no other inscriptions at Xultun that might relate to Jupiter, at least as far as we know."

"What we’re looking at in a couple examples now are different types of astronomical tables similar to the type that we know in bark paper books," Saturno says. Those manuscripts, or codices, which survive from later centuries, include dates going back to the Classic period, the era of Maya history from approximately A.D. 200 to 900. So it is no great surprise that the Maya were keeping astronomical records so early—the evidence of those records simply did not survive colonization or centuries of exposure in a tropical climate. Somehow the Xultun paintings and tables escaped destruction from weathering—and avoided drawing the attention of looters.

"These are our first records that surely show astronomical tables in the Classic period, which is a major discovery, I think," Milbrath says. "It's just an amazing find—it really is."



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  1. 1. JamesDavis 04:59 PM 5/10/12

    It is amazing and I bet it talks about more than these geos can understand. They were a very complex society, and I wonder how they got that way.

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  2. 2. carollia 07:37 PM 5/10/12

    Did anybody really thought that because an ancient calendar ended in 2012 that was going to be the end of humanity?

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  3. 3. fernaguil 08:53 PM 5/10/12

    Jupiter cycle is really important, the relation with our moon needs to be investigated because they know something by practice or event that we have not pass yet and it was important for the maya culture, if we see the solar cycle of 11 or 12 years is very similar with Jupiter orbit, moon have incidence in biological and geophysical about earth. Its really amazing how a culture without technology like us make those discoveries.

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  4. 4. AlannaSiy 11:56 PM 5/10/12

    "Messy decimal system."

    I challenge this statement. Base ten math has flaws. It may be just as messy as the Mayans Base six math. After all, Symmetry has yet to be found.

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  5. 5. psibbald in reply to AlannaSiy 03:17 AM 5/11/12

    You are challenging your own statement. The article referred to a messy decimal number, ie a number with which it is inconvenient or difficult to work. That is hardly the same as an attack on our counting system.

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  6. 6. psibbald in reply to carollia 03:18 AM 5/11/12

    Apparently there are those who do. In this case however, I think the author is making a tongue in cheek reference rather than attempting to reassure the readership of SA.

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  7. 7. tamoa 07:32 AM 5/11/12

    Now if the new information from Xutun can be matched up with the astronomy of the Popol Vuh, we should have an accurate account of the birth to the disintegration of a nova... How many years did it take before it exploded?

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  8. 8. tamoa 07:33 AM 5/11/12

    Now if the new information from Xultun can be matched up with the astronomy of the Popol Vuh, we should have an accurate account of the birth to the disintegration of a nova... How many years did it take before it exploded?

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  9. 9. laniw4 12:31 PM 5/11/12

    I am just so impressed by the work archaeologists do and the scientists who have decoded the writings/paintings that have been discovered to give us this information - this comes after YEARS of study and training and long, long days, hours, years of searching and researching. My hat is off to their brilliant minds and devotion to the art and science of discovery!!!

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  10. 10. Cigarshaped 03:49 PM 5/11/12

    Interesting that Mars and Venus feature so loudly in Aztec culture. Could it be that the whole point of astronomy was to keep a check on known planetary vandals? There is still plenty of evidence that these two planets have been misbehaving for thousands of years. Even if Velikovsky got the big heave-ho, he was right to point out the paranoid sky-watching many cultures engaged in.

    Space probes have shown catastrophic devastation on both planets. Mars bearing the biggest gashed gorge in the solar system and Venus still unbelievably hot, blistered and poisonous. Perhaps the ancients had a genuine fear of these rogue planets, watching for the slightest deviation from their paths. We don't understand, since life has been pretty stable for 1000 years. Astronomy has become a sedate pastime..unless the asteroids become a menace!

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  11. 11. David Russell in reply to Cigarshaped 10:35 PM 5/14/12

    Venus and Mars figure so much in mythology because they are the two brightest things in the sky after the moon and the sun. Jupiter is also a biggy but at the end of the day Venus and Mars are the two that approach the Earth by almost 30,000,000 miles and because Venus is almost as big as our planet, cloud covered, very very bright and also because it is between the Earth and the Sun it acts weird! I can see how Venus held marvel to all civilizations. Mercury is neat because only rarely does it pop its head up high enough to even be counted.

    Mars is predictable, does some funky spinning that drove astronomers a little crazy but was predictable to show up every year and some years brighter than others but at opposition always bright red.

    If the Mayans had a telescope they would have really enjoyed Jupiter and Saturn because of the moons and the obvious ring around Saturn. Velikovsky was so off on his sense of timing and never took into consideration earthly events such as Thera being the cause of many of the biblical events and also the end of the Ice Age which I am sure caused havoc as Ice Dams gave way to water pressure as the ice melted.

    I don't want to do the Carl Sagan on Velikovsky because he did manage to make some interesting predictions but his ideals that the events took place during historical times blows his theories out of the water. Kind of like when they found out the Shroud of Turin was on cloth that dates back to the 13th century. Just a little off the biblical dates required.

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  12. 12. David Russell 10:42 PM 5/14/12

    As always, I am amazed that we are so wrapped up in these issues/non=issues (really) and continue to ignore important science such as nanotubes, synthetic diamonds, graphene, carbon composites, cynobacteria and other real science that would free us from our hydrocarbon addiction. If you want to read some real science please refer to two highly under looked at articles.
    http://www.scientificamerican.com/article.cfm?id=hydrogen-production-comes-natu&posted=1

    http://www.scientificamerican.com/article.cfm?id=angela-belcher-building-t

    But that will take some real thinking out of the box to understand.

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  13. 13. waterman2012 05:17 PM 5/15/12

    Haven’t seen a picture of the tables which include 13.5.4 = 4.784 days yet, but about the the picture with the 4 big numbers, if they are dates…….

    1.195.740 days = 8.6.1.9.0 = 8 June 161 AD
    341.640 = 2.7.9.0.0 = 28 December 2178 BC
    2.448.420 = 1.4.0.1.3.0 = 27 February 3591 AD
    1.765.140 = 12.5.3.3.0 = 26 May 1720 AD.

    All dates have the Haab/Tzolkin notation 8 Cumku/4 Ahau and seem to be a ‘day of creation’ like 0.0.0.0.0 in the Long Count (11 August 3113 BC) which I assume is the base for these newfound numbers as it certainly is for the ‘fearsome’ 13.0.0.0.0 at the end of this year.
    These numbers of days are all dividable by:

    - 4 (representing the Four Winds in the Maya world)
    - 9 (Lords Of The Night, a special calendar of 819 days = 9 x 91)
    - 13 (the mysterious baktun number like the overall creation date from that stone in Coba and the ‘doomsday’ inscriptions of Tortuguero. It is also the number of days you will ‘lose’ in 52 years according to Maya philosophy. Or is it the symbolisation of the 13th zodiac? And off course what is mentioned in the article, moon cycle)
    - 52 (ah that’s why 13)
    - 18.980 (number of days of 1 ‘Aztec century’ of 52 years of 365 days. Besides that, add up 13 to 18.980 and you have almost 52 of solar years (365,25 days). Of course the Maya’s knew the solar year more exactly; 1.872.000 days = 13 baktuns are what our Gregorian calendar (including leap years) takes from 08-11-3113 BC to 12-21-2012 AD like it takes 2.448.420-341.640=2.106.780 days to fulfil the period mentioned above.
    - 365 (this is what Maya’s named the Haab, a calendar with 18 month of 20 days and 5 unlucky days)
    - 260 (number of day of the Tzolkin = 13 x 20 ).
    - 780 (synodic period of Mars).
    And if you take into consideration +/-1 day of correction which we also have found in the Dresden Codex, the numbers work pretty much with Venus (584) and even Mercury (117).
    It is might be worth checking the dates with SkyMaps or anything like that.
    There is probably a lot more behind the scenes…maybe sunspots too!
    Game’s on, let’s do the math…..

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  14. 14. newman 09:34 AM 5/16/12

    I have many questions about this!
    It is amazing! As the mayan get the all information about the planets? Maybe, someone give this maps!
    I know that this theme is taboo to the scientists in our planet.
    But, if this informations are give by aliens! I am crazy?
    This people haven t technology to fly in space!
    After all this years we havent a dead certainty about the universe!
    Who belive in this guesswork?

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  15. 15. David Russell 04:50 PM 5/16/12

    All I can say it that you all enjoy worrying more about end of days versus today that we will probably never fix the fixable and with our thumbs up some orifice succumb like lambs when the time comes, whether self imposed or just plain interplanetary luck.

    I don't know if this would help but HELLO!

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  16. 16. Grumpyoleman 12:38 PM 5/19/12

    My idea about selling "I Survived the End of the World" T-shirts doesn't look so good anymore.

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  17. 17. David Russell in reply to Grumpyoleman 02:14 PM 5/19/12

    I still believe there is a sucker born every minute. Sell the shirts. They will go over big at Tea Party meetings if Obama wins.

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  18. 18. David Russell 12:02 PM 5/29/12

    Again and again, good science with real uses ignored. Don't believe me check out http://www.scientificamerican.com/article.cfm?id=flexible-plastic-electronic-displays-co-exists-e-reader-market One comment so far, mine. Guys, stop worrying about Mayan Calendars, FTL, all the esoteric ain't gonna make your life better and pay attention to the science that can and should be getting our attention!

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