Light echoes: the reflections of stellar explosions onto interstellar dust.
光回声：恒星爆炸对星际尘埃的反射。
Light echo
原声例句
TED演讲（视频版） 2019年9月合集
TED演讲（视频版） 2019年9月合集
I am adapting the same models that detect plumes in city images to detect light echoes in images of the sky.
我正在调整检测城市图像中羽流的相同模型，以检测天空图像中的光回波。
2015 ESLPod
" To hear ringing (ringing) in your ears" is to have sort of a light, echoing noise that shouldn't really be there.
“听到耳鸣（响铃）” 是指有一种轻微的、回声的噪音， 实际上不应该存在。
中文百科
光回波
光回波（回光/回声光）是天文学的一种现象。类似于声音的反射, 光回波常在星体光度快速增加或脉冲时产生, 比如在对新星的观察中, 被星际尘埃反射出的光在沿直线的光之后很长一段时间才到达观察者。由于它们的几何形状，回光可以令人产生超光速的错觉。
英语百科
Light echo 光回波
A light echo is a phenomenon observed in astronomy. Analogous to an echo of sound, a light echo is produced when a sudden flash or burst of light, such as that observed in novae, is reflected off a source and arrives at the viewer after a considerably longer duration than it otherwise would have taken with a direct path. Because of their geometries, light echoes can produce the illusion of superluminal speeds.
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