67P/Churyumov-Gerasimenko (67P or 67P/C-G)
is a comet discovered in 1967 in an orbit
ranging from 1.2 AU to 5.7 AU from the Sun.
It was visited by the European Space Agency mission Rosetta,
which was launched in 2004 and reached the comet in 2014.
CAESAR is a concept for a mission to bring back a sample.