Contents

19 December 2014
Vol 346, Issue 6216

About The Cover

Cover image expansion

COVER A photo-illustration shows the Philae probe drifting toward comet 67P/Churyumov-Gerasimenko after the Rosetta orbiter released it on 12 November. A landing mishap limited the scientific harvest from Philae, but Rosetta is giving researchers their first close-up view of a comet as the sun warms and reshapes it. See the Breakthrough of the Year special section beginning on page 1442.
Lander: © ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA; Comet 67P: © ESA/Rosetta/Philae/ROLIS/DLR