NASA Debunks Mayan Apocalypse in YouTube Video

A video released 10 days before the predicted end of days explains why it won't happen.
4:20 | 12/13/12

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Transcript for NASA Debunks Mayan Apocalypse in YouTube Video
-- won -- world didn't end yesterday. Presented by science at NASA. December 22 2012. If you're watching this video it means one thing. The world didn't -- yesterday. According to media reports of an ancient Mayan prophecy. The world was supposed to be destroyed on December 21 2012. But look around -- The whole thing was a misconception from the very beginning. Says doctor John Carlson director of the center for -- astronomy. The Mayan calendar did not end on December 21 2012. And there were -- Mayan prophecies for telling the end of the world on that date. The truth he says. Is more interesting than fiction. Carlson is a hard -- test a radio astronomer who earned his degree -- distant galaxies. He became interested in the 2012 phenomenon 35 years ago when he attended -- beating of the American association for the advancement of science and learned about the -- Where the rain forests of -- America now stand a great civilization once flourished. The people of -- society built vast city's with a population density compatible to modern Los Angeles county. He mastered astronomy and developed an elaborate written language. Most impressive to Carlson was there expansive sense of time. Times -- is used dwarfed those currently used -- modern astronomers he explains. According to our science the Big -- -- thirteen point seven billion years ago. Their dates and Mayan ruins that stretch back a billion billion times farther the net. The Mayan long count calendar was designed to keep track of such long intervals. Is the most complex calendar system ever developed. Written using modern type -- the long count calendar resembles the odometer in a car. Becomes the digits rotate the calendar can roll over and repeat itself. This repetition is key to the 2012 phenomenon. According to -- -- theology the world was created 5125. Years ago. On a date we would -- August 11 3114. PC. At the time of my calendar looked like this. On December 21 when he twelve. It is exactly the same. In the language of Mayan scholars thirteen -- tunes elapsed between the two dates. This was a significant interval when my theology. -- stress is Carlson not a destructive for. None of the thousands of Bruins tablets and standing stones that archaeologists have examined for talent and of the world. Modern science agrees. NASA experts recently gathered in a Google -- to share their findings. Don't yemen's head of NASA's near earth object program stated that -- -- asteroids or comets were on a collision course with their. Neither is a rogue -- coming to destroy us. If there were anything out there in the complaining headed for earth said NASA Astro biologist David -- and it would already be one of the brightest objects in the sky. Everybody on earth could see it you don't need to ask the government just go out and it's not there. -- -- -- the quartet head of NASA's living with the star program -- the sun is not a threat either. The sun has been -- for billions of years long before the -- even existed. It has never once destroyed the world. Right now the sun is approaching the maximum of its eleven year activity cycle she added. But this is the wimpy a solar cycle of the past fifty years. Reports the contrary are exaggerated. -- -- December 21 2012 is not a day of -- On the contrary he says I've been waiting to experience this day for more than thirty years. For him experiencing December 21 when he twelfth means visiting in my -- and in the Yucatan and thinking back to the height of Mayan civilization. -- ancient humans contemplated expenses of time orders of magnitude beyond modern horizons. And of course. Appreciating the fact the world didn't end yesterday. Got more questions about December 21 when he twelfth. Check www. NASA dot gov slash 2012 for answers. -- for breaking science news stay tuned to science. Dot NASA dot --

This transcript has been automatically generated and may not be 100% accurate.

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