麦哲伦大云
(原标题: The Large Cloud of Magellan)
2023-09-07
浏览次数: 16
16世纪葡萄牙航海家费迪南德·麦哲伦和他的船员在第一次环球航行中有充足的时间研究南方的天空。因此，南半球的天文观测者很容易看到两个模糊的云状物体，它们被称为麦哲伦云，现在被认为是我们更大的螺旋星系银河系的卫星星系。在这张清晰的星系肖像中，我们可以看到距离我们大约16万光年远的多拉多星座的大麦哲伦星云。它的跨度约为1.5万光年，是银河系中质量最大的卫星星系，也是现代距离我们最近的超新星SN 1987A的所在地。中心上方的突出区域是剑鱼座30号，也被称为壮丽的狼蛛星云，一个直径约1000光年的巨大恒星形成区。
查看原文解释
The 16th century Portuguese navigator Ferdinand Magellan and his crew had plenty of time to study the southern sky during the first circumnavigation of planet Earth. As a result, two fuzzy cloud-like objects easily visible to southern hemisphere skygazers are known as the Clouds of Magellan, now understood to be satellite galaxies of our much larger, spiral Milky Way galaxy. About 160,000 light-years distant in the constellation Dorado, the Large Magellanic Cloud is seen in this sharp galaxy portrait. Spanning about 15,000 light-years or so, it is the most massive of the Milky Way's satellite galaxies and is the home of the closest supernova in modern times, SN 1987A. The prominent patch above center is 30 Doradus, also known as the magnificent Tarantula Nebula, a giant star-forming region about 1,000 light-years across.
© Chris Willocks