Role of Sample Return in Addressing Major Questions in Planetary Sciences

<ol><li>Preface (replaces Editorial)</li><li>Accretion of the Earth – Missing Components?</li><li>Oxygen Isotopes and Sampling of the Solar System</li><li>Revolutionizing our Understanding of the Solar System via Sample Return from Mercury</li><li>What is the oxygen isotope composition of Venus? The scientific case for sample return from Earth’s “sister” planet</li><li>Constraining the evolutionary history of the Moon and the inner Solar System: A case for new returned lunar samples</li><li>The non-carbonaceous–carbonaceous meteorite dichotomy</li><li>Exploring the bimodal Solar System via sample return from the main asteroid belt: The case for revisiting Ceres</li><li>Concepts of the small body sample return missions - The 1st 10 Ma year evolution of the solar system</li><li>Organic matter in the Solar System – implications for future on-site and sample return missions&nbsp;&nbsp;&nbsp;&nbsp;</li><li>The Importance of Phobos Sample Return for Understanding the Mars-moon System</li><li>Exploring Mars with Returned Samples</li><li>Sample collection and return from Mars: Optimising sample collection based on the microbial ecology of terrestrial volcanic environments</li><li>Concerns of organic contamination for sample return space missions</li><li>Advanced Curation of Astromaterials for Planetary Science</li></ol>