蒸发的流星照片炸弹蕾丝座星云
(原标题: Vaporizing Meteor Photobombs the Lacerta Nebula)
2026-08-03
浏览次数: 1543
这颗流星怎么了？这条明亮的流星条纹在大蕾丝座星云的长时间曝光中迅速出现和消失，在图像中心可以隐约看到红色。这颗流星体很可能是一块小鹅卵石，它的发光部分是通过加热和激发地球大气中的周围空气来实现的，但它自己会蒸发，并留下被风吹来的气体和尘埃，这些气体和尘埃的颜色可以为它的组成提供线索。这张特色图片是上个月在美国内华达州的死亡谷天文台拍摄的。不过，这个月特别适合看流星。目前有三场流星雨正在进行，尽管它们目前正在与明亮的月亮的光芒竞争能见度。这些流星雨中最活跃的是英仙座流星雨，它将在大约10天内最繁忙——在月球明显变暗之后。今年，英仙座流星雨的高峰几乎与新月同时出现，而且在某些地方，月亮完全遮住了太阳。《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's happening to this meteor? This bright meteor streak appeared and disappeared quickly during a long exposure of the Great Lacerta Nebula, seen faintly in red toward the center of the image. The meteoroid, likely a small pebble, creates its glow partly by heating and exciting surrounding air in Earth's atmosphere, but itself vaporizes and leaves wind-blown gas and dust with colors that give clues to its composition. The featured image was captured last month from Death Valley Observatories in Nevada, USA. This month, though, is particularly good for seeing meteors. Presently there are three meteor showers ongoing, although they are currently competing for visibility with the glow of a bright gibbous Moon. The most active of these showers, the Perseids, will be busiest in about 10 days -- after the Moon has dimmed considerably. This year, the Perseids peak nearly coincides with not only a new Moon, but, from some locations, one that totally eclipses the Sun. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)
© Tom Burnett