大麦哲伦星云
(原标题: The Large Magellanic Cloud)
2026-07-23
浏览次数: 1492
你曾经亲眼见过另一个星系吗？这张特色图片显示了大麦哲伦星云（LMC），它是我们银河系最近的邻居之一。如果你在北纬20°以南的任何地方（但越往南越好），如果你去一个黑暗的天空，远离大城市和光污染的地方，你可以用肉眼看到它。它是一个距离我们16.3万光年远的矮不规则星系，是我们本星系群的一员。尽管LMC很小，总质量大约相当于银河系质量的10% - 20%，但它非常活跃地形成恒星。这可能部分是由于银河系对LMC造成的潮汐引力的推动和拉动。一些天文学家预测，它将在大约20亿年后与银河系相撞。
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Have you ever seen another galaxy with your own eyes? The featured image shows the Large Magellanic Cloud (LMC), one of the closest neighbors of our Milky Way. If you are anywhere south of latitude 20° N (but the further south, the better), you can see it with the unaided eye if you go to a dark sky location, away from big cities and light polution. It is a dwarf irregular galaxy about 163,000 light-years away, and a member of our Local Group of galaxies. Despite being small, with a total mass approximately equivalent to 10% - 20% of the mass of the Milky Way, the LMC is very actively forming stars. This is likely due in part to the gravitational push and pull of tides caused by the Milky Way on the LMC. Some astronomers have predicted that it will collide with the Milky Way in in about 2 billion years.
© Monica Mesa Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)