NASA Administrator Bill Nelson shared on Monday the agency’s path forward on the Mars Sample Return program, including seeking innovative designs to return valuable samples from Mars to Earth. Such samples will not only help us understand the formation and evolution of our solar system but can be used to prepare for future human explorers and to aid in NASA’s search for signs of ancient life. Over the last quarter century, NASA has engaged in a systematic effort to determine the early history of Mars and how it can help us understand the formation and evolution of habitable worlds, including E…