Special Issue | 23 January 2015 Catching a comet

Science's special section contains the first published scientific results from Rosetta at comet 67P.

Read the full introduction

Image portrays the Earth, the Moon and Comet 67P/Churyumov-Gerasimenko showing how they would appear in the same light conditions, taking in account their relative albedos, the percentage of light reflected by the body. The Earth reflects 31% of the light, the Moon 12% and Comet 67P about 6%. The images are not to scale physically.

Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA & Gordan Ugarkovich (Earth); Robert Vanderbei, Princeton Univ (Moon); ESA/Rosetta/NAVCAM (67P/C-G)