ocr: TOMORROW MARS EXPRESS, Europe's first mission to the red planet, will explore the atmosphere and surface of Mars, map the planet and search for water. Mars Express is to be launched by a Soyuz/Fregat launcher in June 2003. ROSETTA is ESA's next cometary mission was supposed to be launched in 2003 by an Ariane 5 to rendezvous with comet Wirtanen in 2011. The mission has been postponed due to problems with Ariane 5 and a new target is under investigation. The Rosetta Lander approaching the comet Wirtanen.