The internet has gone wild with conspiracy theories about a mythical planet, also called Nibiru, that believers claim will pass Earth next month and cause catastrophic earthquakes.
The warnings are not taken seriously by genuine astronomers, but they have revealed they will have their telescopes trained on the night sky in a bid to find the real Planet X.
Astronomers from the internet observatory Slooh.com have called for everyone to join in the search for Planet X.
There is the conspiracy theory that the mythical planet, which allegedly orbits the sun every 3,600 years, will soon pass the Earth causing death and destruction.
Planet 9 or Planet X does exist believe scientists.
And in January NASA announced the discovery of a hypothetical ninth planet way out in our solar system that is believed to be 10 times the mass of Earth with an orbital length around the sun of 18,000 years.
However, the space organisation has denied Planet X poses any risk to Earth and labelled the Nibiru conspiracy theory an internet hoax.
NASA scientists called it Planet 9, but instead of using this to shut down the conspiracy theory they appeared to fuel it by nicknaming it Planet X as well.
Last night Slooh.com screened a video which revealed how astronomers believe they have a telescope strong enough to spot the real Planet X (Planet 9), if it indeed exists.
Dr Paige Godfrey, Slooh director of research, said: "An 18,000 year orbit around the sun - that is just insane.
"So that means it's moving so far away and moving so slowly around the sun, to where we are.
"Night to night you would not see a huge difference in the way you could blink through the motion of Pluto.
"Now they think they will be able to find it, because of the computer models made from the mathematical calculations.
"They think they know the size and they think they know its current location, and they need to be able to constrain the orbit to that needed to map an estimate, and all that they needed was an estimate of how bright it is.
They think they know the size and they think they know its current location, and they need to be able to constrain the orbit to that needed to map an estimate, and all that they needed was an estimate of how bright it is.
"And they needed a telescope capable of seeing it and now they have that with the Subaru telescope of the Mauna Kea Observatory on Hawaii."
The search will not be easy, however, as it is estimated it will only be as bright as a brown dwarf star and will be in the same field of vision as thousands of much brighter stars in our galaxy the Milky Way.
Slooh host Paul Cox said: "It is kind of at the heart of the Milky Way with so many stars in the field of view as we try to find this faint object."
Dr Godfrey replied: "It has a brightness of magnitude 22. It is pretty dim, like a brown dwarf.
"So it is not going to be easy to see but it is definitely doable with the Subaru and the eight metre telescope."
News of a major scientific hunt will send shockwaves through conspiracy theorists who already took the announcement of Planet 9 as proof of Nibiru earlier this year.
Despite NASA insisting there is no threat to Earth and Nibiru is a hoax, YouTube is awash with videos claiming it will be visible in our skies from September 23.
Christian numerologist David Meade is pushing the theory, claiming that codes in the Bible gave him the date and that Planet X will pass us causing earthquakes and devastation in October.
The Nibiru Cataclysm myth dates back to 1976, when writer Zecharia Sitchin claimed that two ancient Middle Eastern cultures – the Babylonians and Sumerians – told of the giant Nibiru which orbited the Sun every 3,600 years.
Self-proclaimed extraterrestrial psychic Nancy Lieder then warned Nibiru would crash into Earth or pass it causing huge earthquakes and tidal waves from the gravitation pull.
Various alleged dates for a strike with Earth have come and gone, as it is expected the October one will.