Proposed CAESAR mission to return a sample from comet 67P/Churyumov-Gerasimenko
(PHYSorg.com Space & Earth)

A proposed space mission known as the Comet Astrobiology Exploration Sample Return (CAESAR) could expand the knowledge of the origin and history of the comet 67P/Churyumov-Gerasimenko. If selected by NASA, it will return a sample from this comet to Earth, enabling scientists to study the leftover material from the formation of our Solar System.