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Beagle 2 was a British lander, part of the European Space Agency's Mars Express mission launched in 2003. Named after Charles Darwin's ship, Beagle 2 was designed to analyze Martian soil and rock samples using various spectroscopy methods. It was intended to land in Isidis Planitia, a basin believed to have been formed by water.

Beagle 2 was released from Mars Express on December 19, 2003, and reached the Martian surface on December 25, 2003. However, no radio contact was ever established. In 2015, images revealed that Beagle 2 had landed intact but failed to deploy its antenna fully, preventing communication. The Mars Express orbiter, meanwhile, successfully mapped Mars and provided evidence of subsurface water and atmospheric methane.1

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2 Britannica Sources
  1. Mars Express
  2. Mars Polar Lander

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