Europe · ESAmissionrobotic
June 2, 2003
Mars Express — ESA's first Mars mission
Just before midnight local time on 2 June 2003, a Soyuz-FG rose from Baikonur Cosmodrome carrying something Europe had never sent anywhere: a spacecraft bound for another planet. Mars Express was assembled in record time to catch an extraordinary window, the summer Mars swung closer to Earth than it had in some 60,000 years. ESA had built the orbiter fast and lean, borrowing heavily from its Rosetta comet chaser designs, and the name 'Express' was a quiet boast about both the rapid build and the short cruise ahead.
Tucked aboard the 1,120-kilogram orbiter rode a British hitchhiker with a famous name: Beagle 2, a lander christened after Darwin's ship, with a nine-note call sign composed by the band Blur and a camera calibration target painted by Damien Hirst. Released on 19 December 2003, Beagle 2 was meant to announce its Christmas Day landing with that little tune. The call never came. That same day, Mars Express fired its main engine and slipped flawlessly into orbit, leaving Europe with a triumph and a heartbreak in the space of a single morning.
The orbiter then got to work and never really stopped. Its camera mapped the planet in stereo and colour, its spectrometers traced water and minerals, and its MARSIS radar, deployed cautiously in 2005 after fears its long booms might swing back and strike the spacecraft, peered kilometres beneath the surface. In 2018, MARSIS data revealed evidence of a body of salty liquid water buried about 1.5 kilometres under the south polar ice. Beagle 2's fate was finally solved in January 2015, when NASA's Mars Reconnaissance Orbiter photographed it sitting intact on Isidis Planitia, its solar panels only partially unfurled. It had landed, and come agonisingly close to working.
More than two decades later, Mars Express is still flying, one of the longest-lived planetary missions in history and ESA's elder statesman at Mars. It has watched seasons turn and dust storms swell, studied the moon Phobos in unprecedented detail, and handed its findings on to every Mars mission that followed. For an agency that had never left Earth's neighbourhood before 2003, this is the mission that made Europe an interplanetary power.
Mission Data
Launch
2 Jun 2003, Baikonur Cosmodrome
Launch vehicle
Soyuz-FG/Fregat
Launch mass
1,120 kg
Mars orbit insertion
25 Dec 2003
Lander
Beagle 2 (lost on landing, found 2015)
Status
Still operating after more than 20 years
Key Facts
Beagle 2's call sign was a nine-note tune composed by the band Blur, and its camera calibration target was a spot painting by Damien Hirst.
Beagle 2 vanished on Christmas Day 2003 and stayed lost for 11 years, until January 2015 HiRISE images showed it had landed safely on Isidis Planitia but failed to fully open its solar panels, leaving its antenna blocked.
The MARSIS radar found evidence in 2018 of salty liquid water buried roughly 1.5 km beneath the south polar ice, the first detection of its kind at Mars.
The 2003 launch window was the best in living memory: that August, Mars passed closer to Earth than at any time in roughly 60,000 years.
Built quickly and cheaply by reusing Rosetta design heritage, it has outlasted nearly everything else sent to Mars and is still returning science in 2026.
Why It Mattered
Mars Express turned ESA into an interplanetary agency in a single stroke and proved that a planetary mission built quickly and economically from reused designs could outlast almost everything else at Mars. Its mapping of water ice, atmospheric chemistry and subsurface structure reshaped the search for Martian habitability, and its two decades of continuous data underpin modern Mars science. Even the loss of Beagle 2 mattered, hardening Europe's approach to landing technology. Every later European deep-space venture stands on the confidence won in June 2003.
NASA/JPL/Corby Waste (public domain)
Official source
