References in periodicals archive ?
The activity level will increase substantially as C-G approaches perihelion in August 2015.
The mission will spend an unprecedented amount of time close to C-G, studying how its activity turns on, how much of the surface is active or if that activity is primarily from discrete jets, how the nucleus interacts with the "collisional region" (the inner part of the coma where the gas density is high enough for collisions between atoms and molecules), and how all of that forms and drives the coma and tail.
But as in any dance, Rosetta will have to continuously adapt to its partner in order to have a successful, many-months tango with C-G.