WE CANNOT see what lies beyond the visible horizon of our universe, simply because light emitted beyond that horizon has not had time to reach us.

所以我们不能看到宇宙里可见视野之外，仅仅是因为在超越视野之外的物体所发射的光线已经没有时间来送达给我们。

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The curvature of the Earth’s horizon (the limb) is clearly visible, as is the faint blue line of the upper atmosphere directly above it (at image top center).

地球地平线的曲线（周边）清晰可见，它的正上方隐约显现出高层大气的蓝线（图片中上部）。

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The curvature of the Earth's horizon (the limb) is clearly visible, as is the faint blue line of the upper atmosphere directly above it (at image top center).

地球地平线的曲线(周边)清晰可见，它的正上方隐约显现出高层大气的蓝线(图片中上部)。

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He sat out in the courtyard, burping and smoking a cigarette, looking up at the crescent moon just visible on the horizon.

NEWYORKER: Nawabdin Electrician

The zeitgeist was chewy with space-flavored nuggets, morsels of futuristic design, precursors of a Tomorrow whose confident glow was visible beyond the horizon of all that was less wonderful, provided one had eyes to see it.

NEWYORKER: Olds Rocket 88, 1950

The lights were visible to most of the north of the Island low on the northern horizon.

BBC: Aurora Borealis