加勒：火星上的笑脸陨石坑
(原标题: Galle: Happy Face Crater on Mars)
2026-02-01
浏览次数: 2061
火星露出了快乐的表情。火星上的加勒陨石坑很有名，因为它的内部标记使它看起来像一张既微笑又眨眼的脸。这些标记最初是在20世纪70年代维京号轨道飞行器拍摄的照片中发现的。火星全球勘测者号（MGS）宇宙飞船在1996年至2006年期间环绕火星运行，拍摄了这张特色照片。笑脸陨石坑及其标志性特征是数十亿年前一颗城市大小的小行星撞击火星表面时偶然形成的。太阳系中所有的岩石行星和卫星都有陨石坑，其中月球和水星上的陨石坑数量最多。如果没有天气和侵蚀的影响，地球和金星会显示出最多的太阳辐射。《天空惊喜》：《APOD》在你生日那天给你拍了什么照片？(1995年以后)
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Mars has put on a happy face. The Martian crater Galle is famous because it has internal markings that make it look like a face that is both smiling and winking. These markings were originally discovered in the 1970s in pictures taken by the Viking Orbiter. The Mars Global Surveyor (MGS) spacecraft that orbited Mars from 1996 to 2006 captured the featured picture. Happy Face Crater and its iconic features were formed by chance billions of years ago when a city-sized asteroid slammed into the Martian surface. All rocky planets and moons in our Solar System show impact craters, with the highest number of craters found on Earth's Moon and the planet Mercury. Earth and Venus would show the most, though, were it not for weather and erosion. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)