CONSERT
CONSERT (Comet Nucleus Sounding Experiment by Radiowave Transmission) probes the internal structure of the nucleus. Radio waves from the CONSERT experiment on the orbiter travel through the nucleus and are returned by a transponder on the lander.
Principal Investigator: Alain Herique, Institut de Planétologie et d'Astrophysique de Grenoble, Grenoble, France.