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美科学家确认火星北极存在水冰
[ 2008-6-21 23:51:00 | By: pololaGirl ]
 
这张美国宇航局6月20日公布的拼接照片分别显示的是“凤凰”号火星探测器6月15日（左）和18日发回的图片。两张图片的对比显示了那些似冰似盐的白色物质已经消失。美国宇航局科学家20日表示，他们分析“凤凰”号火星探测器发回的一系列照片后确认，火星北极区域表面下存在水冰。 新华社/路透 新华网华盛顿６月２０日电 美国宇航局科学家２０日表示，他们分析“凤凰”号火星探测器发回的一系列照片后确认，火星北极区域表面下存在水冰。 美宇航局喷气推进实验室的科学家说，“凤凰”号５月２５日在火星北极着陆以来，开始利用机械臂挖掘土壤。科学家在“凤凰”号发回的一些照片上曾发现一些白色物质，但并不能确定这些物质是水冰还是盐。 ６月１９日在分析“凤凰”号发回的最新图片时，科学家发现，那些似冰似盐的白色物质已经消失。科学家据此认为，“凤凰”号发现的白色物质是水冰，太阳辐射导致水冰蒸发，“盐不可能发生这种变化”。 详细>>> * “凤凰”号传回火星土壤显微图像[组图] * 火星土壤样本终于进入“凤凰”号烤箱[组图] * “凤凰”号探测器挖土成功 递送失败[组图] * "凤凰"号首触火星留下"第一痕" 类似人类脚印 * “凤凰”号拍到高清晰度火星沙尘照片[组图] * 凤凰号掘起火星第一铲土发现发亮物质[组图] * 美“凤凰”号探测器传回第一批图片[组图] urban women, such as four weight Children and exercise Control of life and relax dangerous AGE the same as in the spring Games beware of insomnia Yanyanxiari with patients on condition assessment A Glimpse of the British diabetes prevention preventing the spring ?
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