It's just an internet hoax. Their sources are a lady who thinks that she is contacted by extra terrestrials via genetic material implanted in her brain, a maverick Sumerian "scholar" who sees accounts of spaceships and extra terrestrials and twelve planets in tablets that everybody else says describe polytheism (like the Greeks, multiple deities) and the usual five planets known to the ancients - and a recent group of "researchers" called "Brussel Sprouts".

They have no idea how real astronomy works. Their "Nibiru" is based on the astronomical idea of Nemesis, which was postulated to have a 26 million year orbit to account for a 26 million year cycle of mass extinctions, so they supposed, and orbiting a third of a light year from the sun. They turned that into a 3600 year orbit planet, which makes nonsense of the idea as the orbit would then be unstable - or make our solar system unstable - and who ever thought we have mass extinctions every 3600 years?

Loads of other really silly ideas that they claim are "astronomy". It's about as credible as the idea that we are about to be eaten by a hungry pumpkin.

This video is a parody of the videos they create:

For more about it all, see my "Imaginary Bullshit Planet" Nibiru - Lens Flares, Sun Mirages, Hoaxes & Just Plain Silly

Or

Get this as a kindle ebook (127 pages)

See also my online petition at Change .org: Let's End Dramatized Reporting of "Doomsday" Stories - The Vulnerable Get Suicidal