看着一些照片，他眼中闪烁着记忆的光辉。
照片顶端闪烁的蓝点是一簇明亮、炽热、发出强烈的蓝色及紫外光的年轻恒星。
The glittering blue points at the top of the image are clusters of bright, hot, young stars that shine fiercely in blue and ultraviolet light.
而这还多亏了一件叫做闪烁对比仪的高科技法宝；他把两张在不同夜晚拍摄的天空中同一位置的照片放在这个仪器里，然后快速地来回浏览。
He did it with a high tech marvel called a blink comparator; he put two photographs of the same patch of sky taken on different nights into the contraption and flipped back and forth between them.
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