SpaceRude awakening for NASA's human space-flight dream A high-level review panel is set to warn President Obama that the space agency can't afford its plans to send people back to the moon ¿ìè¶ÌÊÓÆµ
SpaceMonotony was 'most difficult part' of simulated Mars trip Six volunteers recently spent 3.5 months cooped up together in a simulated mission to Mars – they passed the time by writing letters and playing dice ¿ìè¶ÌÊÓÆµ