Rosetta is a
space probe built by the
European Space Agency launched on 2 March 2004. Along with
Philae, its lander module,
Rosetta is performing a detailed study of
comet 67P/Churyumov–Gerasimenko (67P). On 6 August 2014, the spacecraft reached the comet and performed a series of manoeuvres to be captured in its
orbit. On 12 November, the lander module performed the first successful landing on a comet. , the mission continues to return data from the spacecraft in orbit and from the lander in the comet's surface. During its journey to the comet, the spacecraft
flew by Mars and the
asteroids 21 Lutetia and
2867 Šteins.