The 2001 Mars Odyssey and the Mars Reconnaissance Orbiter were launched by the National Aeronautics and Space Administration (NASA), and the Mars Express was launched by the European Space Agency.
Automaatjaamad 2001 Mars Odyssey ja Mars Reconnaissance Orbiter saatis teele USA kosmoseagentuur NASA ja Mars Expressi lähetas Euroopa kosmoseagentuur ESA.