2017年07月23日:信使号所拍摄的水星-（Mercury as Revealed by MESSENGER）--原图下载
Image Credit: MESSENGER,NASA,JHU APL, CIW
说明: 这是前所未见的水星。在2008年，无人的信使号太空船第二次掠过水星，并且拍下了先前只有相对粗糙地面雷达影像的区域之影像。在这张由信使号在通过90分钟后转头从27,000公里之外所拍下的主题影像里，可见到许多第一次看到的表面特徵，包括从临边一个年轻撞击坑射出、形似经度 子午线的不寻常颀长辐线。信使号在2011年入轨水星，并在2012年结束主要任务，不过一直进行细部观测到2015年，当它耗尽燃料接到指令撞击水星表面方止。
原文：
Image Credit: MESSENGER,NASA,JHU APL, CIW
Explanation: Mercury had never been seen like this before. In 2008, the robotic MESSENGER spacecraft buzzed past Mercury for the second time and imaged terrain mapped previously only by comparatively crude radar. The featured image was recorded as MESSENGER looked back 90 minutes after passing, from an altitude of about 27,000 kilometers.Visible in the image, among many other newly imaged features, are unusually long rays that appear to run like meridians of longitude out from a young crater near the northern limb. MESSENGER entered orbit around Mercury in 2011 and finished its primary mission in 2012, but took detailed measurements until 2015, at which time it ran out of fuel and so was instructed to impact Mercury's surface.
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