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.
Pesawat 2001 Mars Odyssey dan Mars Reconnaissance Orbiter diluncurkan oleh Badan Antariksa AS (NASA), dan Mars Express diluncurkan oleh Badan Ruang Angkasa Eropa (ESA).