When was the first successful landing on a moving comet nucleus followed by a surface mission?

Philae’s touchdown on 12 November 2014 was the first time a spacecraft attempted a controlled landing on a comet nucleus and gathered surface data there. The comet itself, 67P/Churyumov-Gerasimenko, was still moving through space as the landing occurred. Philae worked for a short period using battery power before entering hibernation, but it still returned valuable measurements about the comet’s structure and chemistry. The landing complemented Rosetta’s long orbital study and greatly improved scientists’ understanding of comets.