水星与地球的卫星月球看上去有些相似，只是它更大，密度更高，表面引力几乎是月球的两倍。
Larger, denser, and with almost twice the surface gravity of Earth's moon, Mercury still looks moon-like at first glance.
今天晚上地球的天然卫星月球在其轨道上离地球仅有356575公里远，这使得月球处于离地球最近的位置上，而这也是极为罕见的有关月球的事件。
Tonight's rare lunar occurrence, when Earth's natural satellite is only a mere 356, 575 kilometers out in orbit, brings the moon to its closest position to Earth.
所有其他的东西真的是令人吃惊的,”安东尼Coleprete,美国国家航空航天局的首席科学家观测和遥感卫星月球坑(LCROSS)的使命,对探索新闻。
All the other stuff was really startling, " Anthony Coleprete, lead scientist for NASA's Lunar Crater Observation and Sensing Satellite (LCROSS) mission, told Discovery News.
应用推荐