Gravity can bend light, allowing huge clusters of galaxies to act as telescopes, and distorting images of background galaxies into elongated strands.

重力能使光线弯折，使巨大的星系团象望远镜一样，扭曲背景星系的图像，使之变得细长。

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Light emitted in this environment will have a certain frequency, which is related to the time scale (or the gravity strength) of the environment.

在那样环境下所发射的光会具有一定的频率，这个频率是与环境的时间标度(或引力强度)有关。

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We here on Earth obey the same laws of light and gravity as someone in a far off corner of the universe.

我们在地球上的所依从的有关光和引力的规律同它们在遥远的宇宙角落里是一模一样的。

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In other green tech and design news, Hitachi unveiled an impressive new wireless controlled robot to help with the Fukushima Daiichi cleanup and London-based designers Martin Riddiford and Jim Reeves developed the GravityLight, an amazing low-energy, battery-free light that works by harnessing the power of weight and gravity.

ENGADGET: Inhabitat's Week in Green: madder root batteries, sun-powered plane and the world's first fiber-optic solar cell