“Alien enthusiasts believe that it has a cluster of alien-made objects, most likely spacecraft, hiding in its tail. They fear that when the comet gets closer to Earth, the aliens will show themselves, and the first contact is likely to be a disaster. They expect doomsday on September 10.”
No doubt they are the advance force of those aliens who are ticked off at us over global warming.
http://www.guardian.co.uk/science/2011/aug/18/aliens-destroy-humanity-protect-civilisations
I think they are ticked off at us for being so STUPID as to believe such nonsense.