The LHC could generate a magnetic field that could somehow pull an iron-laden space rock off course towards Earth with catastrophic consequences, according to the crack pot theory which is doing the rounds online.
Another theory dreamed up by conspiracists is the LHC could even open up a portal from another dimension through which an unexpected comet or asteroid could suddenly appear before hitting Earth out of the blue.
Some have even bizarrely claimed the LHC could summon the Anti-Christ to earth to cause an apocalypse.
Scientists have readily dismissed these suggestions as ridiculous, but the LHC has long caused fear among certain quarters following claims it could potentially create a black hole which swallows up the planet.
The collider is within miles of tunnels, 75 metres under the French-Swiss border near Geneva, Switzerland, where scientists are smashing atoms to try to discover a parallel universe.
It is accepted by scientists that the LHC could cause a small black hole, but there has been no suggestion it could avtually devour the earth or affect the movement of asteroids in space.