NASA and the United States Government assured that the world will not end on December 21 despite the Mayan calendar prediction of an apocalypse.

According to NASA, the doomsday rumor is based on the false impression of the Mayan calendar. A lot of people wrongly assume that the world will come to an end on December 21 because the Mayan calendar ends on that day. In reality, it just marks the beginning of a new cycle.

"On the 21st, the date of the winter solstice, a calendar cycle called the 13th b'ak'tun comes to an end. Although Maya scholars agree that the ancient Maya would not have seen this day as apocalyptic, rumors have spread that a cosmic event may end life on Earth on that day," NASA explains.

"False rumors about the end of the world in 2012 have been commonplace on the Internet for some time. Many of these rumors involve the Mayan calendar ending in 2012. The world will not end on December 21, 2012 or any day in 2012. Unfortunately, these rumors have many people frightened, especially children. NASA has received thousands of letters concerned about the end of the world," the US government stated.

David Morrison, a planetary astronomer and NASA senior scientist, has already answered numerous questions from the public about the 2012 doomsday and Nibiru.

"At least a once a week I get a message from a young person, as young as 11, who says they are ill and/or contemplating suicide because of the coming doomsday," Morrison shared.

According to NASA, the Nibiru rumors surfaced in 2003.

"The old mystery-planet-collision rumor year was 2003, but when 2004 arrived safely, the rumors changed to 2012," NASA declared. NASA explained earlier this year why the Mayan calendar does not exactly predict the rumored apocalypse.

Also, the astronomers easily dismissed the prediction of the planet "Nibiru" colliding with Earth because there is no detection of such planet.

"The most specific questions are about this rogue planet Nibiru. I think, if it were four years ago, you could say, 'maybe.' If it were real at this point, it would be the brightest thing in the sky," Morrison said.