Simulation of the jets created by the three main active regions of 67P at perihelion 2015, as seen from Earth. This image shows the position of dust particles in the plane of sky. The model assumes no significant change in spin axis orientation and location of active areas on the surface of the nucleus with respect to previous perihelion passages. Note that due to the observing geometry region “B” will create a single jet and not a double feature like the one seen in 2009. As explained in 4.3, region “C” seems to weaken from 2003 to 2004. This is possibly due to a depletion of volatile elements in this area of the nucleus. Therefore there is a possibility that a jet from this region might be too weak to be observable from Earth in 2015.