来自太空的极光
(原标题: Auroras from Space)
2026-07-13
浏览次数: 1538
从上面看极光是什么样子的？看哪!从地面上看，极光在云层之上翩翩起舞，经常造成壮观的景象。从太空看，它们看起来有点不同。当国际空间站（ISS）每90分钟绕地球一周时，它有时会看到在地球下方活跃的极光。大约两周前，在绕轨道运行的国际空间站上拍摄了一段一小时的延时视频，从高空拍摄了极光。国际空间站——以及所有低地球轨道上的物体——将在绿色极光上方经过，但只比红色极光略高一点。极光的电子和质子流太薄，不会对国际空间站构成威胁，就像云对飞机构成的威胁很小一样。从轨道上看，随着磁场的变化，极光可以像巨蟒一样蜿蜒爬行。这段一分钟的视频是由国际空间站第74远征队的法国宇航员索菲·阿登诺拍摄的。《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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What do auroras look like from above? Behold! From the ground, auroras dance high above clouds, frequently causing spectacular displays. From space, they look a bit different. As the International Space Station (ISS) circles the Earth every 90 minutes, it sometimes sees auroras below that are active on the night side. A one-hour time-lapse video showing auroras from above was captured about two weeks ago from the orbiting ISS. The ISS -- and all objects in low Earth orbit -- will pass well above green auroras but just a bit above red glowing auroras. The auroras' electron and proton streams are too thin to be a danger to the ISS, just as clouds pose little danger to airplanes. From orbit, as magnetic fields change, auroras can appear to squiggle and crawl like giant snakes. The featured one-minute video was captured by French astronaut Sophie Adenot of the ISS Expedition 74 crew. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)