Astronauts suffer decades of bone loss from months in space, study shows

Astronauts on space missions lasting longer than six months suffer decades of bone loss, much of which can be irreversible, a new study has found. The finding could pose a serious challenge for future manned missions to Mars. For missions lasting six months or more, astronauts’ exposure to the microgravity of space causes them to … Read more

Mars Base 101: how astronauts can get the most out of a 30-day stay on the Red Planet

NASA is evaluating a first human sojourn on the surface of Mars that would last about 30 Earth days. Scientists and engineers discuss how best to use that month on the Red Planet. Has the Mars explorers plant a flag, simply try to stay alive, do valuable scientific work, or prioritize setting up equipment for … Read more