If Keck can see back in time, imagine what the biggest telescope in the world, the Great Canary telescope, can pick up with its chart-topping aperture.

如果说凯克能回溯时光，世界上最大的望远镜——大加纳利望远镜拥有最为强大的物镜，又具有什么样的能力呢？

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Global Hawk can pick out objects as small as a truck with its synthetic aperture radar, which uses the plane's flight path to simulate the curve of a radar dish several hundred meters long.

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