Contains the contents, program, abstracts, and author indexes for the 46th Lunar and Planetary Science Conference. Special sessions: Rosetta, How Young Is Young?, Early Results from the MAVEN Mission I, Early Results from the MAVEN Mission II, Tracing the Evolution of the Ancient Martian Atmosphere and Climate.institutional support Universities Space Research Association, Lunar and Planetary Institute, National Aeronautics and Space Administration ; conference co-chairs Stephen Mackwell, Eileen Stansbery ; program committee chair David DraperPARTIAL CONTENTS: LDEX Observation of the Dust Environment of the Moon--Physical Stratigraphy Along the Curiosity Traverse and the Transition to Mount Sharp--Investigation of the First Touchdown Site on...