... Comets and Asteroids . ... In May 2014 Rosetta started to apply the brakes with its thrusters so the ten year mission would not end up with Rosetta scorching past the comet and instead find itself sharing the comet?s orbit. ... As stated above scientists believed that comet 67P was going to a glorious BRIGHT ball of ice due to the fact that it is not close enough to the warmer regions of the solar system to start melting but alas it is duller than a rock! (and less reflective than a rock too!) ...