Rosetta (spacecraft)
Rosetta was an ESA space probe.  It went on a mission to study the comet 67P/Churyumov–Gerasimenko.  The Rosetta mission had two parts: the Rosetta space probe and the Philae lander.  The spacecraft was launched on 2 March 2004 by an Ariane 5 rocket.  On 12 November 2014 Philae landed but soon lost electrical power and radio contact.  Rosetta continued to examine the comet from orbit until 30 September 2016 when it landed.