The observatory of Lisbon has leaked important information about comet ison.
They claim that fragments of Comet ison will hit earth in december, this based in emulations performed using supercomputer 'Tiger 2' and a propietary model.
They claim that the when the comet enter the atmosphere of the sun the ice will change state abruptely, turning into a propellant, changing the trajectory of the comet.
They claim that the fragments of the comet will spread in the shape of a cone with a base diameter of 300.000 kms , that is the distance of from the earth to the moon.
they claim that the comet after crossing the sun will be higly fragmented, fragments ranging from a football to the size of a ship.
they say that the propulsion of the ice will change the trajectory of the fragments, causing a shower of cometary fragments that will hit Earth in december.
Trajectory calculated by Nasa without considereng the rocket effect of ice
Comet ison requires only a change of 2 degrees to hit Earth
https://www.youtube.com/watch?v=07gtLKEXAQw
How can ice turn into rocket fuel?
https://www.youtube.com/watch?v=WJYtvOt00MM
They have leaked this in several forums, they also say that they will speak openly in about a month, after the comet passes a callibration point to verify their calculations.
Is important to note that the trajectory of ison is perpendicular to the plane of the planets, two planes intersecting perpendicularly.
They say that the path of the fragments is very similar to the path of Coronal Mass ejection from the sun.
https://www.youtube.com/watch?v=zHxPbC5Wu2o
For more information here
http://third-secret.pro-forum.co.uk/h51-comet-ison