NASA's Stardust craft passed through the dusty shroud of a comet called Wild 2 in 2004 and last January dropped to Earth a canister of the material that the mission had collected (SN: 3/25/06, p. 182: http://www.sciencenews.org/articles/20060325/fob7.asp)
NASA's Stardust craft passed through the dusty shroud of a comet called Wild 2 in 2004 and last January dropped to Earth a canister of the material that the mission had collected (SN: 3/25/06, p. 182: http://www.sciencenews.org/articles/20060325/fob7.asp)
美国国家航空航天局的“星尘”号飞行器2004年穿过一颗名叫“维德尔2”的彗星的彗尾，并于去年一月（2005年）返回了地球，带回了一罐这项任务收集的物质。