Holding in the palm cool cool, it soon melted, as if the night of the meteor, holding a beautiful comet tail and disappeared in the distant galaxy.

捧在掌心凉爽爽，旋即便融化了，仿佛夜晚的流星，托着美丽的慧尾，消失在遥远的银河。

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Sometimes,observers see this as a comet's tail, which can be visible to the unaided eye stretching across the night sky.

VOA: special.2011.02.09

What's the view like from inside a nebula, or a comet's tail?

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His figures were roughly a centimetre tall, most made with two deliberate strokes of the brush, and allowed to fade away as his paint ran out, like the trailing tail of a comet.

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"When they come close to the Sun, this ice melts - solar wind blows this material out into space, so you get a tail of matter coming off the comet, " explains O'Brien.

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