'The Twelfth Planet'

This is another article by David Morrison and the mysterious planet x, otherwise known and Nibiru. As said before, the Sumerians didn't really recieve any attention until the Mayan long count calendar and 2012 rumors spread. Nibiru does not exist. Astronauts would have identified it if there was such a planet. Morrison asserts that "In fact, if it were going to be inside Earth’s orbit in three years, it should have already reached naked-eye visibility, and tens of thousands of astronomers, both amateur and professional, would be tracking it" (Morrison). But some say it was hiding behind the Sun and could be seen from the South Pole

I don't think that Nibiru is a possibility anymore. Having read another article I have realized that it isn't possible. Astronauts would have found this planet way before now. As for it hiding I don't think that it possible either. Each planet has a rotation around the sun.

Morrison, David. "Update on the Nibiru 2012 ‘Doomsday’." CSI. CSI, December 2009. Web. 29 Apr 2010. .
http://www.csicop.org/si/show/update_on_the_nibiru_2012_doomsday/