NASA satellite infrared IRAS (NASA Infrared Astronomy Satellite), which conducted a study of the sky for 10 months in 1983, opened a lot of infrared sources, but none of them was Nibiru or Planet X, as well as any other objects outside of our solar system. Here's an interesting discussion of Saltech (California Institute of Technology – California Institute of Technology). Briefly, IRAS cataloged IR sources 350.000, and initially many of these sources were not identified (which, naturally, gave rise for these studies). After all of these studies have been conducted additional studies using more powerful instruments, both on land and in space. The rumor of 'tenth planet' spread in 1984 after emergence of a scientific article that was published in the Astrophysical Journal Letters (Astrophysical Journal Letters), entitled 'Unidentified point sources in the mini-study IRAS', which discussed several infrared sources that have not bylo'dvoynikov (partners). " However, as it was later established that these "mysterious objects" turned out to be distant galaxies (except for one object, which was a piece of 'infra-red curls'), as published in 1987. No source detected by IRAS, as it turned out, was never a planet. So, let the devil: Nibiru – just a myth, there is virtually no way supported.
According to the astronomer, persistent allegations of a planet that is 'close' but 'invisible', is absolute nonsense. 4. Perhaps we need to ask about Planet X or Eris, and not Nibiru. Why kept secret information about the orbit of Eris? 'Planet X' is an oxymoron (Internally contradictory statement or phenomenon), when applied to the real object.