LOS ANGELES, United States (AFP) — Monotony was the hardest part of a yearlong NASA experiment about the mental and psychological rigors of longterm spaceflight, crew members said after the test ended. The six-member crew emerged Sunday from a dome in Hawaii, on the barren northern slope of the Mauna Loa volcano, where they were studied as part of the US space agency’s mission to send people to Mars by the 2030s. On Monday, US […]