Bruce Murray Space Image LibraryScale comparison of comets visited by spacecraft as of 2014 Scale comparison of comets visited by spacecraft as of 2014 As of 2014, six comets have been visited by spacecraft; the most recent addition is Rosetta's 67P/Churyumov-Gerasimenko. Image credits: Halley: Russian Academy of Sciences / Ted Stryk. Borrelly: NASA / JPL / Ted Stryk. Tempel 1 and Hartley 2: NASA / JPL / UMD. Churyumov-Gerasimenko: ESA / Rosetta / NavCam / Emily Lakdawalla. Wild 2: NASA / JPL. Montage by Emily Lakdawalla.For more information and the latest version of this image, visit planetary.org/cometscale.Here is a version of the image with an earlier view of Churyumov-Gerasimenko.