You must shoot with an exposure of at least four to 10 seconds to capture the trails of light, and your images will be blurry if the camera is held by hand.

要向捕捉光的轨迹，你必须让相机曝光4到10秒；而如果你把相机放到手上去拍摄的话，你的照片会很模糊。

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Basking in the glow of the bright supergiant star Rigel, the Witch Head Nebula trails like a puff of smoke through the Eridanus constellation about 700 light years away.

在明亮的超巨星参宿七的照耀下，女巫头星云的尾部就像一阵烟，穿过700光年远的波江座。

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See them in a different light then you have been when you were running. It will make a big difference on how you view it when you get back out running the trails again.

用另外的一个视角来看你曾经进行的跑步，这可以让你再次在田径场上跑步时能有很大不同的看法。

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"People may see trails of light, they may feel a bit foggy, " says Dr. Zarate, lead author of the study.

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When a neutrino interacts in the NOvA detector , the particles it produces leave trails of light in their wake.

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And when you're all done, you've created a programmable robot that can follow trails, avoid obstacles and react to changes in light.

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