In May 2012. according to National Geographic Brazilian astronomer Rodney Gomes may have found the mysterious Planet X.
Gomes was not the first man to suggest that Planet X was hidden behind Neptune.
Neptune, which is 4 times larger than planet earth was discovered in the 1840's.
French mathematician Urbain Le Verrier used Newtonian mechanics to analyze perturbations in the orbit of Uranus and hypothesized that they were caused by the gravitational pull of a yet-undiscovered planet. Le Verrier predicted the position of this new planet and sent his calculations to German astronomer Johann Gottfried Galle.
On 23 September 1846, the night following his receipt of the letter, Galle and his student Heinrich d'Arrest discovered Neptune, exactly where Le Verrier had predicted. There remained some slight discrepancies in the gas giants' orbits. These were taken to indicate the existence of yet another planet orbiting beyond Neptune.
Even before Neptune's discovery, some speculated that one planet alone was not enough to explain the discrepancy. On 17 November 1834, the British amateur astronomer the Reverend Thomas John Hussey reported a conversation he had had with French astronomer Alexis Bouvard to George Biddell Airy, the British Astronomer Royal. Hussey reported that when he suggested to Bouvard that the unusual motion of Uranus might be due to the gravitational influence of an undiscovered planet, Bouvard replied that the idea had occurred to him, and that he had corresponded with Peter Andreas Hansen, director of the Seeberg Observatory in Gotha, about the subject. Hansen's opinion was that a single body could not adequately explain the motion of Uranus, and theorized that two planets lay beyond Uranus
In 1894, William Pickering, a wealthy Bostonian, founded the Lowell Observatory in Flagstaff, Arizona. In 1906, convinced he could resolve the conundrum of Uranus's orbit, he began an extensive project to search for a trans-Neptunian planet, which he named Planet X.
The X in the name represents an unknown and is pronounced as the letter, as opposed to the Roman numeral for 10 (At the time, Planet X would have been the ninth planet). Lowell's hope in tracking down Planet X was to establish his scientific credibility, which had eluded him thanks to his widely derided belief that channel-like features visible on the surface of Mars were canals constructed by an intelligent civilization.
Lowell's sudden death in 1916 temporarily halted the search for Planet X. Failing to find the planet, according to one friend, "virtually killed him". After 1978, a number of astronomers kept up the search for Lowell's Planet X, since Pluto was no longer a viable candidate. Congress eventually approved funding of US$36,000,000 in 1978, and the design of the Large Space Telescope began in earnest, aiming for a launch date of 1983.
During the early 1980's, the telescope was named after Edwin Hubble, who profoundly changed the understanding of the universe by confirming the existence of galaxies other than the Milky Way.
It isn't necessary to own a telescope, and most people, star lover or not, can go to Google Earth to have a look at just about anything in the universe.Google Earth actually let's you f find Planet X with the click of a button.
Three years ago, author, researcher Lloyd Pye, interviewed on Fox News about the origin of humanity and the connection to Planet X. His book was called "Everything You Know Is Wrong."
His interview explains how Planet X entered the Solar System.