NASA contributed two Electra radio communications systems to the ExoMars Trace Gas Orbiter ( European Space Agency ) and assisted with the navigation , tracking and data return of the spacecraft . In addition , NASA is contributing the mass spectrometer and the main electronics units for the Mars Organic Molecule Analyzer ( MOMA ). The MOMA instrument , central to the ExoMars 2020 rover mission ( European Space Agency ), will allow detection and characterization of organic molecules on Mars . The ExoMars rover will include a drill that will allow sampling of the subsurface of Mars to a depth of almost two meters . The MOMA instrument is led Principal Investigator Fred Goesmann of the Max Planck Institute for Solar System Research in Göttingen , Germany . The Deputy Principal Investigator is Francois Raulin of the University of Paris . Will Brinckerhoff of NASA ' s Goddard Spaceflight Center in Greenbelt , Maryland , is the project scientist for MOMA .