著名的昴星团在天文照片中常常以迷人的蓝色反射星云夺人眼目，但在这张照片上，它们因明亮的月光而失色。
Astronomical images of the well-known Pleiades often show the cluster's alluring blue reflection nebulae, but they are washed-out here in the bright moonlight.
环绕着蓝色马头的眼睛部位的蓝色光芒——与周围其它恒星——是一个由细尘埃组成的反射星云。
The blue glow that surrounds the blue Horsehead's eye — and other stars around the image — is a reflection nebula composed of fine dust.
反射星云DG 129反射的是临近恒星的光芒，而照片中的星云光芒则是由于其中炙热的电离气体变冷时发出的。
Unlike reflection nebulae like DG 129, which reflects light from nearby stars, this nebula emits light from hot ionized gas that glows as it cools.
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