美国国家航空暨太空总署上个月以太空船刻意撞击月球，十三日宣布的新发现，即来自对该太空船传来的资料的分析。
The discovery announced Friday comes from an analysis of data from a spacecraft NASA intentionally crashed into the moon last month.
他一直在研究从装在美国国家航空暨太空总署火星侦察卫星上的照相机发回地球的照片。
Ojha was studying images returned to Earth from the HiRISE camera, aboard NASA's Mars Reconnaissance Orbiter.
从装在美国国家航空暨太空总署火星侦察卫星上的照相机发回地球的照片显示在一个大裂谷中有着不同深浅颜色的岩层相间出现。
Images from a camera aboard NASA's Mars Reconnaissance Orbiter show alternating layers of dark- and light-toned rock in a giant rift valley.
美国国家航空及太空总署说，此前曾出现过四次轨道内的意外碰撞，但都是火箭部件和其他碎片。
NASA said there have been four earlier instances of accidental collisions in orbit, generally involving rocket parts and other debris.
美国太空总署国家航空和航宇局表示火星上曾经出现过一个较浅的咸水海，海中可能有生命存在。
The U. S. space agency NASA says Mars once had a shallow, salty sea that could have supported life.
美国太空总署国家航空和航宇局表示火星上曾经出现过一个较浅的咸水海，海中可能有生命存在。
The U. S. space agency NASA says Mars once had a shallow, salty sea that could have supported life.
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