 This mock Mars mission is a crucial step in NASA's plan to set foot on the Red Planet by the early 2040s. The volunteers were thanked for devoting a year of their lives to serve humanity's exploration of space. Ana Aslam. Ethiopia's 80 or so ethnic groups each have their own different music and rhythms. Gabriela Gamandi has made it her mission to explore them, and she's been speaking to Penny Dale.