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The Odd Quads

机译:奇怪的四边形

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摘要

The January meteor shower known as the Quadrantids is an anomaly among major meteor events. It's a young shower — sightings of its component meteoroids were first noted in January 1835, quite late compared to the Lyrids, for instance, which have been on record since at least 687 BC. The Quadrantid shower is also the shortest of the major showers, with a peak lasting only four hours or so. This short viewing window suggests Earth passes through a narrow stream that's no more than 500 years old. Due to the relatively young age of the stream, the dust and particles haven't had much time to disperse into a broader lane of dust.
机译:作为Quadrantids的1月流星淋浴是主要流星活动中的异常。 这是一个年轻的阵雨 - 它的组分青磁仪于1835年1月首次注意到,与Lyrids相比,这一比较迟到了,例如,这是由于至少687年以来的记录。 四边形淋浴也是主要淋浴的最短淋浴,持续高峰只有四个小时左右。 这个简短的观察窗口表明地球通过狭窄的流,不超过500岁。 由于溪流的相对年轻,灰尘和粒子没有太多时间分散到更广阔的灰尘道路上。

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